chno[7], chon[7], chor[7], ochr[7], proc[6],
fon[7], for[7], orf[7], hoc[6], och[6], hop[6], hor[5], rho[5], noc[4], por[4], pro[4], rop[4], nor[3],
ho[4], oh[4], co[3], op[3], po[3], no[2], on[2], or[2], ro[2],
