f2d2o7 e2d2o d2d2 c2d2o7 b2d2o

qbd2o pbd2 obd2o7 nbd2o mbd2

1kc2 0kc2o7 zkc2o ykc2 xkc2o7

cub2o7 bub2o aub2 9tb2o7 8tb2o

n3a2o m3a2 l3a2o7 k3a2o j3a2