file 1
A	RACK	2	2	2	2
B	RACK	2	2	2	2
A	CACK	2	2	2	2
B	CACK	2	2	2	2

file 2
A	KACK	2	2
B	KACK	2	2	

file 3

E	TACK	4	2
F	TACK	4	2