r 1, col 1
r 2, col 1	r 2, col 2	r 2, col 3	r2,c4 a b c d	r 2, col 5
	r 3, col 2	r 3, col 3		r 3, col 5
	r 4, col 2	r 4, col 3		r 4, col 5
	r 5, col 2	r 5, col 3		r 5, col 5
	r 6, col 2	r 6, col 3		r 6, col 5
r 7, col 1