opito[7], tropi[7], otrop[7], porto[7],
pito[6], topi[6], trip[6], port[6], prot[6], trop[6], poro[5], ropo[5], trio[5], troi[5], root[5], roto[5], toro[5],
pit[5], pot[5], top[5], poi[4], por[4], pro[4], rop[4], toi[4], oto[4], itr[4], tir[4], tri[4], ort[4], rot[4], tor[4], roi[3], oro[3],
pi[3], op[3], po[3], ot[3], to[3], or[2], ro[2],
