card one, a red thread in hole a and d, a white thread in hole b and c in a s thread.
on card two, a red thread in hole c and d, a white thread in hole a and b in a s thread.
on card three, a red thread in hole b and c, a white thread in hole a and d in a s thread.
on card four, a red thread in hole a and b, a white thread in hole c and d in a s thread.
on card five, a red thread in hole a and b, a white thread in hole c and d in a z thread.
on 