a-a a-b a-i aaa aab aai aan aao aap aar aas aay ab- aba abb abi abn abo abp abr abs aby ai- aia aib aii ain aio aip air ais aiy an- ana anb ani ann ano anp anr ans any aoa aob aoi aon aoo aop aor aos ap- apa apb api apn apo app apr aps apy ar- ara arb ari arn aro arp arr ars ary as- asa asb asi asn aso asp asr ass asy ay- aya ayi ayn ayo ayp ayr ays b-p baa bab bai ban bao bap bar bas bay bba bbb bbi bbn bbo bbp bbr bbs bby bi- bia bib bii bin bio bip bir bis biy bna bnb bni bnn bno bnp bnr bns boa bob boi bon boo bop bor bos boy bpa bpb bpi bpn bpo bpp bpr bps bpy bra brb bri brn bro brp brr brs bry bsa bsb bsi bsn bso bsp bsr bss bsy by- bya byi byn byo byp byr bys ia- iaa iab iai ian iao iap iar ias iba ibb ibi ibn ibo ibp ibr ibs iby iia iib iii iin iio iip iir iis in- ina inb ini inn ino inp inr ins iny io- ioa iob ioi ion ioo iop ior ios ipa ipb ipi ipn ipo ipp ipr ips ipy ir- ira irb iri irn iro irp irr irs iry is- isa isb isi isn iso isp isr iss isy iya iyo iyr iys iyy n-i naa nab nai nan nao nap nar nas nay nba nbb nbi nbn nbo nbp nbr nbs nia nib nii nin nio nip nir nis nna nnb nni nnn nno nnp nns no- noa nob noi non noo nop nor nos noy npa npb npi npn npo npp npr nps nra nrb nri nrn nro nrp nrr nrs nry nsa nsb nsi nsn nso nsp nsr nss nsy nya nyn nyo nyp nys nyy o-i oaa oab oai oan oao oap oar oas ob- oba obb obi obn obo obp obr obs oby oia oib oii oin oio oip oir ois on- ona onb oni onn ono onp onr ons ony oo- ooa oob ooi oon ooo oop oor oos op- opa opb opi opn opo opp opr ops opy or- ora orb ori orn oro orp orr ors ory os- osa osb osi osn oso osp osr oss oya oyi oyo oys p-p paa pab pai pan pao pap par pas pay pba pbb pbi pbn pbo pbp pbr pbs pby pia pib pii pin pio pip pir pis pn- pna pnb pni pnn pno pnp pnr pns pny poa pob poi pon poo pop por pos poy ppa ppb ppi ppn ppo ppp ppr pps pra prb pri prn pro prp prr prs pry ps- psa psb psi psn pso psp psr pss psy py- pya pyb pyn pyo pyr pys ra- raa rab rai ran rao rap rar ras ray rba rbb rbi rbn rbo rbp rbr rbs ria rib rii rin rio rip rir ris riy rna rnb rni rnn rno rnp rnr rns rny roa rob roi ron roo rop ror ros roy rpa rpb rpi rpn rpo rpp rpr rps rra rrb rri rrn rrp rrr rrs rsa rsb rsi rsn rso rsp rsr rss ry- rya ryn ryo ryr rys ryy saa sab sai san sao sap sar sas say sba sbb sbi sbn sbo sbp sbr sbs sby sia sib sii sin sio sip sir sis sna snb sni snn sno snp snr sns sny soa sob soi son soo sop sor sos soy spa spb spi spn spo spp spr sps spy sr- sra srb sri srn sro srp srr srs sry ss- ssa ssb ssi ssn sso ssp ssr sss sy- sya syb syi syn syp syr sys yaa yab yai yan yao yap yar yas yay ybi ybp ybr ybs yby yii yin yio yip yir yis yna ynn ynp yns yny yob yoi yon yoo yop yor yos yoy ypa ypo yps yra yrn yro yrp yrs ysa ysb ysi yso ysp ysr yss ysy yyb yys yyy