acbn bcbno ccbno3 dcbn ecbno

z2bno 02bno3 12bn 22bno 32bno3

otcno3 ptcn qtcno rtcno3 stcn

dkdn ekdno fkdno3 gkdn hkdno

2aeno 3aeno3 4aen 5aeno 6aeno3