hobo[8], bohr[8], boro[6], robo[6], horo[6], zorb[6], worz[4],
oho[5], bor[5], rob[5], hor[5], rho[5], oro[3], owo[3], rwo[3], zoo[3], orz[3],
bo[4], ho[4], oh[4], or[2], ro[2], oz[2],
