3sibdx 2sibd 1sib 0sibdx zsibd
e2hbd d2hb c2hbdx b2hbd a2hb
pbhb obhbdx nbhbd mbhb lbhbdx
0kgbdx zkgbd ykgb xkgbdx wkgbd
bufbd aufb 9tfbdx 8tfbd 7tfb