a-a a-b a-i aaa aab aad aai aak aar aas aay ab- aba abb abd abi abk abr abs aby ad- ada adb add adi adk adr ads ady ai- aia aib aid aii aik air ais aiy aka akb akd aki akk akr aks ar- ara arb ard ari ark arr ars ary as- asa asb asd asi ask asr ass asy ay- aya ayd ayi ayk ayr ays baa bab bad bai bak bar bas bay bba bbb bbd bbi bbk bbr bbs bby bda bdb bdd bdi bdk bdr bds bdy bi- bia bib bid bii bik bir bis biy bka bkb bkk bkr bks bra brb brd bri brk brr brs bry bsa bsb bsd bsi bsk bsr bss bsy by- bya byd byi byk byr bys daa dab dad dai dak dar das day dba dbb dbd dbi dbk dbr dbs dby dda ddb ddd ddi ddk ddr dds ddy di- dia dib did dii dik dir dis diy dka dkb dki dkk dkr dks dra drb drd dri drk drr drs dry dsa dsb dsd dsi dsk dsr dss dsy dy- dya dyb dyd dyk dyr dys dyy i-d ia- iaa iab iad iai iar ias iba ibb ibd ibi ibk ibr ibs iby ida idb idd idi idk idr ids idy iia iib iid iii iir iis ika ikb iki ikk ikr iks ir- ira irb ird iri irk irr irs iry is- isa isb isd isi isk isr iss isy iya iyr iys iyy ka- kaa kab kad kai kak kar kas kay kba kbb kbd kbi kbk kbr kbs kda kdb kdk kdr kds kdy kia kib kid kii kik kir kis kkb kki kkk kkr kks kky kra krd kri krk krr krs kry ksa ksb ksd ksi ksk ksr kss kya kyd kyr kys ra- raa rab rad rai rak rar ras ray rba rbb rbd rbi rbk rbr rbs rda rdb rdd rdi rdr rds rdy ria rib rid rii rik rir ris riy rkb rkk rks rky rra rrb rrd rri rrk rrr rrs rsa rsb rsd rsi rsk rsr rss ry- rya ryd ryk ryr rys ryy saa sab sad sai sak sar sas say sba sbb sbd sbi sbk sbr sbs sby sda sdb sdd sdi sdk sdr sds sdy sia sib sid sii sik sir sis sk- ska skb skd ski skk skr sks sky sr- sra srb srd sri srk srr srs sry ss- ssa ssb ssd ssi ssk ssr sss sy- sya syb syd syi syk syr sys yaa yab yad yai yak yar yas yay ybi ybr ybs yby yda yds ydy yid yii yir yis yka yki ykk yra yrs ysa ysb ysi ysk ysr yss ysy yyb yys yyy