a-a aaa aaf aan aao aap aar aax aay af- afa aff afn afo afp afr afx afy an- ana anf ann ano anp anr anx any aoa aof aon aoo aop aor aox ap- apa apf apn apo app apr apx apy ar- ara arf arn aro arp arr arx ary ax- axa axn axo axp axr axx ay- aya ayf ayn ayo ayp ayr ayx faa faf fan fao fap far fax fay ffa fff ffn ffo ffp ffr ffx ffy fna fnf fnn fnp fnr fnx foa fof fon foo fop for fox foy fpa fpn fpo fpp fpr fpx fpy fra frf frn fro frp frr fry fxp fxr fxx fy- fya fyn fyo fyp naa naf nan nao nap nar nax nay nfa nff nfn nfo nfp nfr nna nnf nnn nno nnp no- noa nof non noo nop nor nox noy npa npf npn npo npp npr nra nrf nrn nro nrp nrr nrx nry nya nyf nyn nyo nyp nyx nyy oaa oaf oan oao oap oar oax of- ofa off ofn ofo ofp ofr ofx on- ona onf onn ono onp onr onx ony oo- ooa oof oon ooo oop oor oox op- opa opf opn opo opp opr opx opy or- ora orf orn oro orp orr orx ory ox- oxa oxf oxn oxo oxx oxy oya oyo p-p paa paf pan pao pap par pax pay pfa pff pfn pfo pfp pfr pfx pfy pn- pna pnf pnn pno pnp pnr pnx pny poa pof pon poo pop por pox poy ppa ppf ppn ppo ppp ppr ppx pra prf prn pro prp prr prx pry pxr py- pya pyf pyn pyo pyr pyx ra- raa raf ran rao rap rar rax ray rfa rff rfn rfo rfp rfr rna rnn rno rnp rnr rny roa rof ron roo rop ror rox roy rpa rpf rpn rpo rpp rpr rpx rra rrf rrn rrp rrr rxp rxr ry- rya ryf ryn ryo ryr ryy xaa xaf xan xap xar xfa xfn xfx xna xno xoa xof xon xoo xop xor xox xpa xpf xpn xpo xpp xrf xrx xry xxo xxp xxx xxy xyp xyr xyy yaa yaf yan yao yap yar yax yay yfa yff yfr yna ynn ynp yny yof yon yoo yop yor yox yoy ypa ypf ypo yra yrf yrn yro yrp yxa yxy yyf yyy