fok[8], for[7], orf[7], mho[6], ohm[6], kom[5], hor[5], rho[5], kor[4], kro[4], okr[4], ork[4], rok[4], mor[4], kwo[4], wok[4], rwo[3],
hm[5], ho[4], oh[4], ko[3], ok[3], om[3], or[2], ro[2],