A qwerty keyboard has 5 distinct sections:
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5 groups of 5. 25/5=5 ; 5 x 5 = 25.
if order does not matter then, (23x22x21x20x19)/(5x4x3x2x1) = 33,649
8,640 groups.
There are only two possibilities... 10 groups of 2 or 5 groups of 4. Unless - you can have varying sized groups - which you didn't specify.
You can make three different groups of three out of nine. 9/3=3