Set A:         1 x any number

Set B:          0 x any number

Set C:          2x3, 3x2, 2x2

Set D:         2x4, 4x2, 5x2 2x5 

Set E:         6x2, 2x6, 7x2, 2x7

Set F:          8x2, 2x8, 9x2, 2x9

Set G:         9x3, 3x9, 9x4, 4x9

Set H:         9x5, 5x9, 3x3

Set I:           9x6, 6x9, 4x4

Set J:          9x7, 7x9, 5x5

Set K:          9x8, 8x9, 6x6

Set L:          3x4, 4x3, 7x7

Set M:        3x5, 5x3, 8x8

Set N:         3x6, 6x3, 9x9

Set O:         3x7, 7x3, 3x8, 8x3

Set P:          7x8, 8x7, 6x8, 8x6

Set Q:         5x8, 8x5, 4x8, 8x4

Set R:         7x6, 6x7, 7x5, 5x7

Set S:          7x4, 4x7, 6x5, 5x6

Set T:         5x4, 4x5, 4x6, 6x4

The remaining sets review of all facts.