1 = ss
2 = wb
3 = vb
4 = hs
5 = oGCD macro

1 5 2 5 3 5 4 5 4 5 4 5 4 5 4 5
1 5 2 5 3 5 4 5 4 5 4 5 4 5 4 5
1 5 2 5 3 5 4 5 4 5 4 5 4 5 4 5
1 5 2 5 3 5 4 5 4 5 4 5 4 5 4 5
1 5 2 5 3 5 4 5 4 5 4 5 4 5 4 5
1 5 2 5 3 5 4 5 4 5 4 5 4 5 4 5
1 5 2 5 3 5 4 5 4 5 4 5 4 5 4 5

This is how2brd.

(aside from the additional specific oGCD macro variants for mechanics)