a   = 10110110
b   = 10010010
yuu = 0000000010110110
zuu = 0000000010110110
yus = 0000000010110110
zus = 0000000010110110
ysu = 0000000010110110
zsu = 0000000010110110
yss = 1111111110110110
zss = 1111111110110110