opon[5], pono[5], poro[5], ropo[5], pozo[5], nono[4], norn[4], noro[4], ozon[4], zono[4],
por[4], pro[4], rop[4], non[3], ono[3], nor[3], oro[3], zon[3], zoo[3], orz[3],
op[3], po[3], no[2], on[2], or[2], ro[2], oz[2],
