ub4of9 tb4of sb4o rb4of9 qb4of

5k3of 4k3o 3k3of9 2k3of 1k3o

gu2o fu2of9 eu2of du2o cu2of9

r31of9 q31of p31o o31of9 n31of

2c1of 1c1o 0c1of9 zc1of yc1o