-er -ey a-a a-b aaa aab aad aae aaf aar aas aau aay ab- aba abb abd abe abf abr abs abu aby ad- ada adb add ade adf adr ads adu ady aea aeb aed aee aef aer aes aeu aey af- afa afb afd afe aff afr afs afu afy ar- ara arb ard are arf arr ars aru ary as- asa asb asd ase asf asr ass asu asy au- aua aub aud aue auf aur aus ay- aya ayd aye ayf ayr ays ayu b-u baa bab bad bae baf bar bas bau bay bba bbb bbd bbe bbf bbr bbs bbu bby bda bdb bdd bde bdf bdr bds bdu bdy be- bea beb bed bee bef ber bes beu bey bfa bfb bfd bfe bff bfr bfs bfu bfy bra brb brd bre brf brr brs bru bry bsa bsb bsd bse bsf bsr bss bsu bsy bua bub bud bue buf bur bus buu buy by- bya byd bye byf byr bys byu daa dab dad dae daf dar das dau day dba dbb dbd dbe dbf dbr dbs dbu dby dda ddb ddd dde ddf ddr dds ddu ddy de- dea deb ded dee def der des deu dey dfa dfb dfd dfe dff dfr dfs dfu dra drb drd dre drr drs dru dry dsa dsb dsd dse dsf dsr dss dsu dsy dua dub dud due duf dur dus duy dy- dya dyb dyd dye dyr dys dyu dyy eaa eab ead eae eaf ear eas eau eba ebb ebd ebe ebf ebr ebs ebu eby ed- eda edb edd ede edf edr eds edu edy eea eeb eed eee eef eer ees eey ef- efa efb efd efe eff efr efs era erb erd ere erf err ers eru ery es- esa esb esd ese esf esr ess esu esy eu- eua eub eud eue euf eur eus eya eyd eye eyr eys faa fab fad fae faf far fas fau fay fba fbb fbd fbe fbf fbr fbs fbu fda fdb fdd fde fdf fdr fds fdu fea feb fed fee fef fer fes feu fey ffa ffd ffe fff ffr ffs ffu ffy fra frb frd fre frf frr frs fru fry fsa fsb fsd fse fsf fsr fss fsu fua fub fud fue fuf fur fus fuu fy- fya fyb fye ra- raa rab rad rae raf rar ras rau ray rba rbb rbd rbe rbf rbr rbs rbu rda rdb rdd rde rdf rdr rds rdu rdy re- rea reb red ree ref rer res reu rey rfa rfb rfd rfe rff rfr rfs rfu rra rrb rrd rrf rrr rrs rru rsa rsb rsd rse rsf rsr rss rsu rua rub rud rue ruf rur rus ruu ruy ry- rya ryd rye ryf ryr rys ryu ryy saa sab sad sae saf sar sas sau say sba sbb sbd sbe sbf sbr sbs sbu sby sda sdb sdd sde sdf sdr sds sdu sdy se- sea seb sed see sef ser ses seu sey sfa sfb sfd sfe sff sfr sfs sfu sr- sra srb srd sre srf srr srs sry ss- ssa ssb ssd sse ssf ssr sss ssu sua sub sud sue suf sur sus suu suy sy- sya syb syd sye syr sys syu ua- uaa uab uad uae uaf uar uas uau uay uba ubb ube ubf ubr ubs ubu uby uda udb udd ude udf udr uds udu uea ueb ued uee uef uer ues uey ufa ufd ufe uff ufr ufs ufu ur- ura urb urd ure urf urr urs uru ury usa usb usd use usf usr uss usu uua uue uur uus uuu uys uyu yaa yab yad yae yaf yar yas yau yay ybe ybf ybr ybs yby yda yde yds ydy yea yeb yed yee yef yer yes yey yfa yfd yfe yff yfr yfs yfu yra yre yrf yrs yru ysa ysb yse ysr yss ysu ysy yua yud yue yur yus yuu yuy yyb yye yyf yys yyu yyy