diff --git a/src/filter.rs b/src/filter.rs
index 662d6f3..655c70a 100644
--- a/src/filter.rs
+++ b/src/filter.rs
@@ -1,11 +1,10 @@
-use std::collections::HashMap;
-
 use dialoguer::MultiSelect;
 
 use crate::timetable::models::Category;
-use crate::timetable::models::Course;
 use crate::timetable::models::Timetable;
-use crate::utils::fill_hours;
+use crate::utils::get_count;
+use crate::utils::get_entry;
+use crate::utils::get_selection;
 
 const DISCLAIMER: &str = "(selection avec ESPACE, ENTRER pour valider)";
 
@@ -59,42 +58,9 @@ fn choice(timetable: &mut Timetable) {
 
 /// Filter the multiple courses
 fn courses(timetable: &mut Timetable) {
-    // Entry's name used for finding duplicates
-    let get_entry = |course: &Course| format!("{} - {:?}", course.name, course.category);
-
-    let mut hours = vec![];
-    fill_hours(&mut hours);
-
-    // Names showed to the users
-    let get_selection = |data: &(&Course, String)| {
-        format!(
-            "{} - {} {}-{}",
-            data.0.name,
-            data.1,
-            hours[data.0.start].split_once('-').unwrap().0,
-            hours[data.0.start + data.0.size - 1]
-                .split_once('-')
-                .unwrap()
-                .1
-        )
-    };
-
-    // List of courses who will be courses
-    let mut courses = vec![];
-
-    // Counter of courses appearing to know if multiples slots are available
-    let mut counts = HashMap::new();
-    timetable.1 .1.iter().for_each(|day| {
-        day.courses.iter().for_each(|course_opt| {
-            if let Some(course) = course_opt {
-                if course.category == Category::Cours {
-                    courses.push((course, day.name.to_owned()));
-                    let count = counts.entry(get_entry(course)).or_insert(0);
-                    *count += 1;
-                }
-            }
-        })
-    });
+    // List of courses and Counter of how much they appears
+    // to know if multiples slots are available
+    let (mut courses, counts) = get_count(timetable, &[Category::Cours]);
 
     // Keep only elements who have multiples slots
     courses.retain(|course| *counts.get(&get_entry(course.0)).unwrap() > 1);
@@ -127,7 +93,7 @@ fn courses(timetable: &mut Timetable) {
                     return true;
                 }
 
-                // Keep only chosen courses
+                // Keep only chosen courses if multiple was available
                 for i in &selections {
                     if get_selection(&(course, day.name.to_owned())) == multiselected[*i] {
                         return true;
@@ -142,45 +108,9 @@ fn courses(timetable: &mut Timetable) {
 
 /// Filter the multiples TD/TP
 fn tdtp(timetable: &mut Timetable) {
-    // Entry's name used for finding duplicates
-    let get_entry = |course: &Course| format!("{} - {:?}", course.name, course.category);
-
-    let mut hours = vec![];
-    fill_hours(&mut hours);
-
-    // Names showed to the users
-    let get_selection = |data: &(&Course, String)| {
-        format!(
-            "{} - {} {}-{}",
-            data.0.name,
-            data.1,
-            hours[data.0.start].split_once('-').unwrap().0,
-            hours[data.0.start + data.0.size - 1]
-                .split_once('-')
-                .unwrap()
-                .1
-        )
-    };
-
-    // List of courses who will be TP/TD
-    let mut td_or_tp = vec![];
-
-    // Counter of appearing of TP/TD to know if a TP/TD have multiple possible course
-    let mut counts = HashMap::new();
-    timetable.1 .1.iter().for_each(|day| {
-        day.courses.iter().for_each(|course_opt| {
-            if let Some(course) = course_opt {
-                match course.category {
-                    Category::TD | Category::TP => {
-                        td_or_tp.push((course, day.name.to_owned()));
-                        let count = counts.entry(get_entry(course)).or_insert(0);
-                        *count += 1;
-                    }
-                    _ => (),
-                }
-            }
-        })
-    });
+    // List of TP/TD and Counter of how much they appears
+    // to know if multiples slots are available
+    let (mut td_or_tp, counts) = get_count(timetable, &[Category::TD, Category::TP]);
 
     // Keep only elements who have multiples TD/TP
     td_or_tp.retain(|course| *counts.get(&get_entry(course.0)).unwrap() > 1);
@@ -208,12 +138,12 @@ fn tdtp(timetable: &mut Timetable) {
                     return true;
                 }
 
-                // Keep if its an -only one course- TD/TP
+                // Keep if only one slot is available of the TD/TP
                 if *counts.get(&get_entry(course)).unwrap() == 1 {
                     return true;
                 }
 
-                // Remove courses not followed
+                // Keep only chosen TD/TP if multiple was available
                 for i in &selections {
                     if get_selection(&(course, day.name.to_owned())) == multiselected[*i] {
                         return true;
diff --git a/src/utils.rs b/src/utils.rs
index d5ca354..afb56a6 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -1,6 +1,10 @@
+use std::collections::HashMap;
+
 use chrono::{Datelike, Utc};
 use scraper::Html;
 
+use crate::timetable::models::{Category, Course, Timetable};
+
 pub mod models;
 
 /// Panic if an error happened
@@ -194,3 +198,48 @@ pub fn fill_hours(hours: &mut Vec<String>) {
         hours.pop();
     }
 }
+
+/// Names showed to the users
+pub fn get_selection(data: &(&Course, String)) -> String {
+    let mut hours = vec![];
+    fill_hours(&mut hours);
+
+    format!(
+        "{} - {} {}-{}",
+        data.0.name,
+        data.1,
+        hours[data.0.start].split_once('-').unwrap().0,
+        hours[data.0.start + data.0.size - 1]
+            .split_once('-')
+            .unwrap()
+            .1
+    )
+}
+
+/// Entry's name used for finding duplicates
+pub fn get_entry(course: &Course) -> String {
+    format!("{} - {:?}", course.name, course.category)
+}
+
+pub fn get_count<'a>(
+    timetable: &'a mut Timetable,
+    allowed_list: &'a [Category],
+) -> (Vec<(&'a Course, String)>, HashMap<String, i32>) {
+    // List of courses who will be courses
+    let mut courses = vec![];
+
+    let mut counts = HashMap::new();
+    timetable.1 .1.iter().for_each(|day| {
+        day.courses.iter().for_each(|course_opt| {
+            if let Some(course) = course_opt {
+                if allowed_list.contains(&course.category) {
+                    courses.push((course, day.name.to_owned()));
+                    let count = counts.entry(get_entry(course)).or_insert(0);
+                    *count += 1;
+                }
+            }
+        })
+    });
+
+    (courses, counts)
+}