Started work on the new Grammar checker system.

Phase2/Godot_Toolset/CodeSandboxes/ToolsetProjectTemplate/Grammar/GrammarTest.gd

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+extends Node2D
+
+# Called when the node enters the scene tree for the first time.
+func _ready():
+	print(checkAndCorrectGrammar("A unicorn is a mythical creature"))
+	print(checkAndCorrectGrammar("An apple a day keeps the doctor away"))
+	print(checkAndCorrectGrammar("An house on the hill."))
+	print(checkAndCorrectGrammar("A egg a day is unhealthy."))
+	print(checkAndCorrectGrammar("An unique idea."))
+
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+func _process(delta):
+	pass
+
+
+func checkAndCorrectGrammar(str: String) -> String:
+	var vowels: Array = ["a", "e", "i", "o", "u"]
+	var words: Array = str.split(" ")
+	var correctedStr: String = ""
+	
+	for word in words:
+		var firstChar: String = word[0].to_lower()
+		if firstChar in vowels:
+			if word.substr(0, 2).to_lower() != "an":
+				word = "an " + word
+				print("Changed \"" + word + "\" to \"" + "an " + word + "\"")
+			else:
+				print("Kept \"" + word + "\"")
+			correctedStr += word + " "
+		else:
+			if word.substr(0, 1).to_lower() != "a":
+				if word.substr(1, 1) == "n":
+					word = word.substr(2, word.length())
+					print("Changed \"" + word + "\" to \"" + "a " + word + "\"")
+				else:
+					word = "a " + word
+					print("Changed \"" + word + "\" to \"" + "a " + word + "\"")
+			else:
+				print("Kept \"" + word + "\"")
+				correctedStr += word + " "
+
+	return correctedStr.strip_edges()

Phase2/Godot_Toolset/CodeSandboxes/ToolsetProjectTemplate/Grammar/GrammarTest.tscn

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+[gd_scene load_steps=2 format=3 uid="uid://brx174ry2iceq"]
+
+[ext_resource type="Script" path="res://Grammar/GrammarTest.gd" id="1_kk72l"]
+
+[node name="GrammarTest" type="Node2D"]
+script = ExtResource("1_kk72l")