diff --git a/lib/anchor_end.js b/lib/anchor_end.js
index 56e8b85..ebe6da0 100644
--- a/lib/anchor_end.js
+++ b/lib/anchor_end.js
@@ -1,3 +1,3 @@
 module.exports = function (str) {
-  // TOOD
+  return /BANANAS$/.test(str);
 }
\ No newline at end of file
diff --git a/lib/anchor_start.js b/lib/anchor_start.js
index 56e8b85..743ef20 100644
--- a/lib/anchor_start.js
+++ b/lib/anchor_start.js
@@ -1,3 +1,3 @@
 module.exports = function (str) {
-  // TOOD
+  return /^LITERALLY.*/.test(str);
 }
\ No newline at end of file
diff --git a/lib/char_class.js b/lib/char_class.js
index a08ee57..60f34e9 100644
--- a/lib/char_class.js
+++ b/lib/char_class.js
@@ -1,3 +1,3 @@
 module.exports = function (str) {
-  // TODO
+  return /\b[aoeiu0-9]+/.test(str);
 }
\ No newline at end of file
diff --git a/lib/negated_char_class.js b/lib/negated_char_class.js
index a08ee57..9fd93dd 100644
--- a/lib/negated_char_class.js
+++ b/lib/negated_char_class.js
@@ -1,3 +1,3 @@
 module.exports = function (str) {
-  // TODO
+  return /^\D{1}[^A-Z]{1}/.test(str);
 }
\ No newline at end of file