a-a aaa aan aao aap aar aax aay an- ana ann ano anp anr anx any aoa aon aoo aop aor aox ap- apa apn apo app apr apx apy ar- ara arn aro arp arr arx ary ax- axa axn axo axp axr axx ay- aya ayn ayo ayp ayr ayx naa nan nao nap nar nax nay nna nnn nno nnp no- noa non noo nop nor nox noy npa npn npo npp npr nra nrn nro nrp nrr nrx nry nya nyn nyo nyp nyx nyy oaa oan oao oap oar oax on- ona onn ono onp onr onx ony oo- ooa oon ooo oop oor oox op- opa opn opo opp opr opx opy or- ora orn oro orp orr orx ory ox- oxa oxn oxo oxx oxy oya oyo p-p paa pan pao pap par pax pay pn- pna pnn pno pnp pnr pnx pny poa pon poo pop por pox poy ppa ppn ppo ppp ppr ppx pra prn pro prp prr prx pry pxr py- pya pyn pyo pyr pyx ra- raa ran rao rap rar rax ray rna rnn rno rnp rnr rny roa ron roo rop ror rox roy rpa rpn rpo rpp rpr rpx rra rrn rrp rrr rxp rxr ry- rya ryn ryo ryr ryy xaa xan xap xar xna xno xoa xon xoo xop xor xox xpa xpn xpo xpp xrx xry xxo xxp xxx xxy xyp xyr xyy yaa yan yao yap yar yax yay yna ynn ynp yny yon yoo yop yor yox yoy ypa ypo yra yrn yro yrp yxa yxy yyy