fok[8], for[7], orf[7], fos[7], sof[7], hor[5], rho[5], kor[4], kro[4], okr[4], ork[4], rok[4], kos[4], sok[4], ros[3], sos[3], orz[3],
ho[4], oh[4], ko[3], ok[3], or[2], ro[2], os[2], oz[2],