a-a a-b a-t aaa aab aad aao aar aas aat aau aay ab- aba abb abd abo abr abs abt abu aby ad- ada adb add ado adr ads adt adu ady aoa aob aod aoo aor aos aot aou ar- ara arb ard aro arr ars art aru ary as- asa asb asd aso asr ass ast asu asy at- ata atb atd ato atr ats att atu au- aua aub aud auo aur aus aut ay- aya ayd ayo ayr ays ayt ayu b-u baa bab bad bao bar bas bat bau bay bba bbb bbd bbo bbr bbs bbt bbu bby bda bdb bdd bdo bdr bds bdt bdu bdy boa bob bod boo bor bos bot bou boy bra brb brd bro brr brs brt bru bry bsa bsb bsd bso bsr bss bst bsu bsy bta btb btd bto btr bts btt btu bty bua bub bud buo bur bus but buu buy by- bya byd byo byr bys byt byu daa dab dad dao dar das dat dau day dba dbb dbd dbo dbr dbs dbt dbu dby dda ddb ddd ddo ddr dds ddt ddu ddy doa dob dod doo dor dos dot dou doy dra drb drd dro drr drs drt dru dry dsa dsb dsd dso dsr dss dst dsu dsy dta dtb dtd dto dtr dts dtt dtu dty dua dub dud duo dur dus dut duy dy- dya dyb dyd dyo dyr dys dyu dyy oaa oab oad oao oar oas oat oau ob- oba obb obd obo obr obs obt obu oby oda odb odd odo odr ods odt odu oo- ooa oob ood ooo oor oos oot or- ora orb ord oro orr ors ort oru ory os- osa osb osd oso osr oss ost osu ot- ota otb otd oto otr ots ott otu ou- oua oud ouo our ous out oya oyd oyo oys ra- raa rab rad rao rar ras rat rau ray rba rbb rbd rbo rbr rbs rbt rbu rda rdb rdd rdo rdr rds rdt rdu rdy roa rob rod roo ror ros rot rou roy rra rrb rrd rrr rrs rrt rru rsa rsb rsd rso rsr rss rst rsu rta rtb rtd rto rtr rts rtt rtu rty rua rub rud ruo rur rus rut ruu ruy ry- rya ryd ryo ryr rys ryu ryy saa sab sad sao sar sas sat sau say sba sbb sbd sbo sbr sbs sbt sbu sby sda sdb sdd sdo sdr sds sdt sdu sdy soa sob sod soo sor sos sot sou soy sr- sra srb srd sro srr srs srt sry ss- ssa ssb ssd sso ssr sss sst ssu sta stb std sto str sts stt stu sty sua sub sud suo sur sus sut suu suy sy- sya syb syd syr sys syt syu taa tab tad tao tar tas tat tau tay tba tbb tbd tbo tbr tbs tbt tbu tda tdb tdd tdo tdr tds tdt tdu tdy to- toa tob tod too tor tos tot tou toy tra trb trd tro trr trs trt tru try tsa tsb tsd tso tsr tss tst tsu tsy tta ttb ttd tto ttr tts ttt ttu tty tua tub tud tuo tur tus tut tuu tuy tya tyd tyo tyr tys tyt ua- uaa uab uad uao uar uas uat uau uay uba ubb ubo ubr ubs ubt ubu uby uda udb udd udo udr uds udt udu uoa uob uod uoo uor uos uot ur- ura urb urd uro urr urs urt uru ury usa usb usd uso usr uss ust usu uta utb utd uto utr uts utt utu uty uua uur uus uut uuu uyo uys uyu yaa yab yad yao yar yas yat yau yay ybr ybs yby yda ydo yds ydt ydy yob yod yoo yor yos yot you yoy yra yro yrs yrt yru ysa ysb yso ysr yss yst ysu ysy yta ytd yto ytr yts ytt ytu yua yud yuo yur yus yut yuu yuy yyb yys yyt yyu yyy