bulcv culcvb dulc eulcv fulcvb

0kmcvb 1kmc 2kmcv 3kmcvb 4kmc

pbnc qbncv rbncvb sbnc tbncv

e2ncv f2ncvb g2nc h2ncv i2ncvb

3socvb 4soc 5socv 6socvb 7soc