In dnd languages we’ve one more learning language which is known as goblin language and it is popularly known as Ghukliak. Actually, it was one of the languages which has spoken by the goblins, hobgoblins, and even bugbears too. The script it originally used was the Dethek script, but as per our research by the late 15th century the goblinoids had begun in using the thorass alphabet instead of that Dethek script.
Goblin Language Alphabets: ae b c d e f g h ti j k l m n o p q r s t u v w x rit z
Common (English) Language Alphabets: a b c d e f g h i j k l m n o p q r s t u v w x y z
Also read dnd languages 5e from our official page.