r1 C1	r1 C2	r1 C3
r2 C1	r2 C2	r2 C3
r3 C1	r3 C2	r3 C3
r4 C1	r4 C2	r4 C3
r5 C1	r5 C2	r5 C3
r6 C1	r6 C2	r6 C3
r7 C1	r7 C2	r7 C3
r8 C1	r8 C2	r8 C3