a-a a-b a-i aaa aab aaf aai aam aao aar aas aay ab- aba abb abf abi abm abo abr abs aby af- afa afb aff afi afm afo afr afs afy ai- aia aib aif aii aim aio air ais aiy ama amb amf ami amm amo amr ams amy aoa aob aof aoi aom aoo aor aos ar- ara arb arf ari arm aro arr ars ary as- asa asb asf asi asm aso asr ass asy ay- aya ayf ayi ayo ayr ays baa bab baf bai bam bao bar bas bay bba bbb bbf bbi bbm bbo bbr bbs bby bfa bfb bff bfi bfm bfo bfr bfs bfy bi- bia bib bif bii bim bio bir bis biy bma bmb bmf bmi bmm bmo bmr bms boa bob bof boi bom boo bor bos boy bra brb brf bri brm bro brr brs bry bsa bsb bsf bsi bsm bso bsr bss bsy by- bya byf byi bym byo byr bys faa fab faf fai fam fao far fas fay fba fbb fbf fbi fbm fbo fbr fbs ffa fff ffi ffm ffo ffr ffs ffy fia fib fif fii fim fir fis fma fmb fmf fmi fmm fmo fmr fms foa fob fof foi fom foo for fos foy fra frb frf fri frm fro frr frs fry fsa fsb fsf fsi fsm fso fsr fss fy- fya fyb fyi fyo i-f ia- iaa iab iaf iai iam iao iar ias iba ibb ibf ibi ibm ibo ibr ibs iby ifa ifb iff ifi ifm ifo ifr ifs ify iia iib iif iii iim iio iir iis im- ima imb imf imi imm imo ims imy io- ioa iob iof ioi iom ioo ior ios ir- ira irb irf iri irm iro irr irs iry is- isa isb isf isi ism iso isr iss isy iya iym iyo iyr iys iyy m-f m-o m-r maa mab maf mai mam mao mar mas may mba mbb mbf mbi mbm mbo mbr mbs mfa mfb mff mfi mfm mfo mfr mfs mfy mi- mia mib mif mii mim mio mir mis miy mma mmb mmf mmi mmm mmo mmr mms moa mob mof moi mom moo mor mos moy mra mrb mrf mri mrm mro mrr mrs mry msa msb msf msi msm mso msr mss msy my- mya myb myf mym myo myr mys o-i oaa oab oaf oai oam oao oar oas ob- oba obb obf obi obm obo obr obs oby of- ofa ofb off ofi ofm ofo ofr ofs oia oib oif oii oim oio oir ois om- oma omb omf omi omm omo omr oms omy oo- ooa oob oof ooi oom ooo oor oos or- ora orb orf ori orm oro orr ors ory os- osa osb osf osi osm oso osr oss oya oyi oyo oys ra- raa rab raf rai ram rao rar ras ray rba rbb rbf rbi rbm rbo rbr rbs rfa rfb rff rfi rfm rfo rfr rfs ria rib rif rii rim rio rir ris riy rma rmb rmf rmi rmm rmo rmr rms roa rob rof roi rom roo ror ros roy rra rrb rrf rri rrm rrr rrs rsa rsb rsf rsi rsm rso rsr rss ry- rya ryf rym ryo ryr rys ryy saa sab saf sai sam sao sar sas say sba sbb sbf sbi sbm sbo sbr sbs sby sfa sfb sff sfi sfm sfo sfr sfs sia sib sif sii sim sio sir sis sma smb smf smi smm smo smr sms smy soa sob sof soi som soo sor sos soy sr- sra srb srf sri srm sro srr srs sry ss- ssa ssb ssf ssi ssm sso ssr sss sy- sya syb syi sym syr sys yaa yab yaf yai yam yao yar yas yay ybf ybi ybm ybr ybs yby yfa yff yfm yfr yfs yif yii yim yio yir yis yma ymi ymm ymo yms yob yof yoi yom yoo yor yos yoy yra yrf yro yrs ysa ysb ysi ysm yso ysr yss ysy yyb yyf yys yyy