All the maximum formations up to 4 letters in each of the groups
ABCDE
F G H I J
* We have two groups
1st group = abcde
* 2nd group = fghij
Make all formations of a maximum of 4 letters
Abcd, abce, aabb .. aaaa aaab .....
Fghi fghj, ffgg, ffff fffg .....
After ready = cross Cartesian type
Abcd / fghi
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