chno[7], chon[7], chor[7], ochr[7], norn[4], wron[4],
hoc[6], och[6], hor[5], rho[5], noc[4], non[3], nor[3], won[3], rwo[3],
ho[4], oh[4], co[3], no[2], on[2], or[2], ro[2],
