uxd2og txd2o sxd2 rxd2og qxd2o
56c2o 46c2 36c2og 26c2o 16c2
ggc2 fgc2og egc2o dgc2 cgc2og
rpb2og qpb2o ppb2 opb2og npb2o
2ya2o 1ya2 0ya2og zya2o yya2