Keyboard Guide

For online dictionary 

Double letters:
th/v/V -> "ث"       gh/g/G -> "غ"
kh/x/X -> "خ"       sh/$ -> "ش"
dh/* -> "ذ"

Different cases:
d -> "د"            t -> "ت"
D -> "ض"            T -> "ط"
z -> "ز"            h -> "ه"
Z -> "ظ"            H -> "ح"
s -> "س"
S -> "ص"

All other "normal" letters:
a/A -> "ا"          q/Q   -> "ق"
b/B -> "ب"          k/K   -> "ك"
j/J -> "ج"          l/L   -> "ل"
7 -> "ح"            m/M   -> "م"
r/R -> "ر"          n/N   -> "ن"
w/W -> "و"          y/Y   -> "ي"
f/F -> "ف"          e/E/3 -> "ع"