a-a aaa aah aan aao aap aax aha ahh ahn aho ahp ahx an- ana anh ann ano anp anx aoa aoh aon aoo aop aox ap- apa aph apn apo app apx ax- axa axh axn axo axp axx haa hah han hao hap hax hha hhh hhn hho hhp hna hnh hnn hno hoa hoh hon hoo hop hox hpa hph hpn hpo hpp naa nah nan nao nap nax nha nhh nhn nhp nna nnh nnn nno nnp no- noa noh non noo nop nox npa nph npn npo npp oaa oah oan oao oap oax oha ohh ohn oho ohp on- ona onh onn ono onp onx oo- ooa ooh oon ooo oop oox op- opa oph opn opo opp opx ox- oxa oxn oxo oxx p-p paa pah pan pao pap pax pha phn pho php phx pn- pna pnh pnn pno pnp pnx poa poh pon poo pop pox ppa pph ppn ppo ppp ppx xaa xan xap xhp xna xno xoa xon xoo xop xox xpa xpn xpo xpp xxo xxp xxx