Dumbek rhythms are a collection of rhythms that are usually played with hand drums such as the dumbek.
[1] These rhythms are various combinations of these three basic sounds: In a simple notation, these three sounds are represented by three letters: D, T, and K. When capitalized, the beat is emphasized, and when lower-case, it is played less emphatically.
[1] These basic sounds can be combined with other sounds: This is the simple dumbek rhythm notation for the 2/4 rhythm known as ayyoub: There are many traditional rhythms.
Some are much more popular than others.
The "big six" Middle Eastern rhythms are Ayyoub, Beledi (Masmoudi Saghir), Chiftitelli, Maqsoum, Masmoudi and Saidi.