Arabic uses 28 different consonants, and each consonant is represented by a different letter.
Because the Arabic alphabet is written in cursive, most of the letters connect with each other. For this reason, every single letter that represents a consonant actually can be written four different ways depending on
its position in a word - whether it's in the initial, medial, or final positions,
or whether it stands alone.
In English transcription of the Arabic script, all
letters are case-sensitive.
Moumou17, Your attempt on the Arabic letters is a fair one.
I wanted to remind you that there are other two consonants you left out. One is Laam-Alif and Alif hamza. Unfortunately can't write them here. But find out you will know what they are.