a-a a-b a-i aaa aab aad aai aar aas aay ab- aba abb abd abi abr abs aby ad- ada adb add adi adr ads ady ai- aia aib aid aii air ais aiy ar- ara arb ard ari arr ars ary as- asa asb asd asi asr ass asy ay- aya ayd ayi ayr ays baa bab bad bai bar bas bay bba bbb bbd bbi bbr bbs bby bda bdb bdd bdi bdr bds bdy bi- bia bib bid bii bir bis biy bra brb brd bri brr brs bry bsa bsb bsd bsi bsr bss bsy by- bya byd byi byr bys daa dab dad dai dar das day dba dbb dbd dbi dbr dbs dby dda ddb ddd ddi ddr dds ddy di- dia dib did dii dir dis diy dra drb drd dri drr drs dry dsa dsb dsd dsi dsr dss dsy dy- dya dyb dyd dyr dys dyy i-d ia- iaa iab iad iai iar ias iba ibb ibd ibi ibr ibs iby ida idb idd idi idr ids idy iia iib iid iii iir iis ir- ira irb ird iri irr irs iry is- isa isb isd isi isr iss isy iya iyr iys iyy ra- raa rab rad rai rar ras ray rba rbb rbd rbi rbr rbs rda rdb rdd rdi rdr rds rdy ria rib rid rii rir ris riy rra rrb rrd rri rrr rrs rsa rsb rsd rsi rsr rss ry- rya ryd ryr rys ryy saa sab sad sai sar sas say sba sbb sbd sbi sbr sbs sby sda sdb sdd sdi sdr sds sdy sia sib sid sii sir sis sr- sra srb srd sri srr srs sry ss- ssa ssb ssd ssi ssr sss sy- sya syb syd syi syr sys yaa yab yad yai yar yas yay ybi ybr ybs yby yda yds ydy yid yii yir yis yra yrs ysa ysb ysi ysr yss ysy yyb yys yyy