a-a a-b a-t aaa aab aad aao aap aar aas aat aay ab- aba abb abd abo abp abr abs abt aby ad- ada adb add ado adp adr ads adt ady aoa aob aod aoo aop aor aos aot ap- apa apb apd apo app apr aps apt apy ar- ara arb ard aro arp arr ars art ary as- asa asb asd aso asp asr ass ast asy at- ata atb atd ato atp atr ats att ay- aya ayd ayo ayp ayr ays ayt b-p baa bab bad bao bap bar bas bat bay bba bbb bbd bbo bbp bbr bbs bbt bby bda bdb bdd bdo bdp bdr bds bdt bdy boa bob bod boo bop bor bos bot boy bpa bpb bpd bpo bpp bpr bps bpt bpy bra brb brd bro brp brr brs brt bry bsa bsb bsd bso bsp bsr bss bst bsy bta btb btd bto btp btr bts btt bty by- bya byd byo byp byr bys byt daa dab dad dao dap dar das dat day dba dbb dbd dbo dbp dbr dbs dbt dby dda ddb ddd ddo ddp ddr dds ddt ddy doa dob dod doo dop dor dos dot doy dpa dpb dpd dpo dpp dpr dps dpt dra drb drd dro drp drr drs drt dry dsa dsb dsd dso dsp dsr dss dst dsy dta dtb dtd dto dtp dtr dts dtt dty dy- dya dyb dyd dyo dyp dyr dys dyy oaa oab oad oao oap oar oas oat ob- oba obb obd obo obp obr obs obt oby oda odb odd odo odp odr ods odt oo- ooa oob ood ooo oop oor oos oot op- opa opb opd opo opp opr ops opt opy or- ora orb ord oro orp orr ors ort ory os- osa osb osd oso osp osr oss ost ot- ota otb otd oto otp otr ots ott oya oyd oyo oys p-p paa pab pad pao pap par pas pat pay pba pbb pbd pbo pbp pbr pbs pbt pby pda pdb pdd pdo pdp pdr pds pdt poa pob pod poo pop por pos pot poy ppa ppb ppd ppo ppp ppr pps ppt pra prb prd pro prp prr prs prt pry ps- psa psb psd pso psp psr pss pst psy pt- pta ptb ptd pto ptp ptr pts ptt pty py- pya pyb pyd pyo pyr pys pyt ra- raa rab rad rao rap rar ras rat ray rba rbb rbd rbo rbp rbr rbs rbt rda rdb rdd rdo rdp rdr rds rdt rdy roa rob rod roo rop ror ros rot roy rpa rpb rpd rpo rpp rpr rps rpt rra rrb rrd rrp rrr rrs rrt rsa rsb rsd rso rsp rsr rss rst rta rtb rtd rto rtp rtr rts rtt rty ry- rya ryd ryo ryr rys ryy saa sab sad sao sap sar sas sat say sba sbb sbd sbo sbp sbr sbs sbt sby sda sdb sdd sdo sdp sdr sds sdt sdy soa sob sod soo sop sor sos sot soy spa spb spd spo spp spr sps spt spy sr- sra srb srd sro srp srr srs srt sry ss- ssa ssb ssd sso ssp ssr sss sst sta stb std sto stp str sts stt sty sy- sya syb syd syp syr sys syt taa tab tad tao tap tar tas tat tay tba tbb tbd tbo tbp tbr tbs tbt tda tdb tdd tdo tdp tdr tds tdt tdy to- toa tob tod too top tor tos tot toy tpa tpb tpd tpo tpp tpr tps tpt tra trb trd tro trp trr trs trt try tsa tsb tsd tso tsp tsr tss tst tsy tta ttb ttd tto ttp ttr tts ttt tty tya tyd tyo typ tyr tys tyt yaa yab yad yao yap yar yas yat yay ybp ybr ybs yby yda ydo yds ydt ydy yob yod yoo yop yor yos yot yoy ypa ypd ypo yps yra yro yrp yrs yrt ysa ysb yso ysp ysr yss yst ysy yta ytd yto ytp ytr yts ytt yyb yys yyt yyy