boro[6], robo[6], boso[6], boss[6], poro[5], ropo[5], opos[5], ospo[5], pros[5], psor[5], spor[5], poss[5], roso[4],
bor[5], rob[5], por[4], pro[4], rop[4], osp[4], pss[4], oro[3], oso[3], ros[3], sos[3],
bo[4], op[3], po[3], or[2], ro[2], os[2],
