rolet[7], rotel[7], tetro[7], retor[6], retro[6],
trel[6], tetr[6], tret[6], tort[6], orle[5], role[5], erot[5], tero[5],
tle[5], lot[5], ole[4], lor[4], rol[4], eto[4], ret[4], ter[4], ort[4], rot[4], tor[4], ero[3],
el[3], et[3], te[3], ot[3], to[3], eo[2], er[2], re[2], or[2], ro[2],
