bbb bbd bbi bbk bbr bbs bby bdb bdd bdi bdk bdr bds bdy bi- bib bid bii bik bir bis biy bkb bkk bkr bks brb brd bri brk brr brs bry bsb bsd bsi bsk bsr bss bsy by- byd byi byk byr bys dbb dbd dbi dbk dbr dbs dby ddb ddd ddi ddk ddr dds ddy di- dib did dii dik dir dis diy dkb dki dkk dkr dks drb drd dri drk drr drs dry dsb dsd dsi dsk dsr dss dsy dy- dyb dyd dyk dyr dys dyy i-d ibb ibd ibi ibk ibr ibs iby idb idd idi idk idr ids idy iib iid iii iir iis ikb iki ikk ikr iks ir- irb ird iri irk irr irs iry is- isb isd isi isk isr iss isy iyr iys iyy kbb kbd kbi kbk kbr kbs kdb kdk kdr kds kdy kib kid kii kik kir kis kkb kki kkk kkr kks kky krd kri krk krr krs kry ksb ksd ksi ksk ksr kss kyd kyr kys rbb rbd rbi rbk rbr rbs rdb rdd rdi rdr rds rdy rib rid rii rik rir ris riy rkb rkk rks rky rrb rrd rri rrk rrr rrs rsb rsd rsi rsk rsr rss ry- ryd ryk ryr rys ryy sbb sbd sbi sbk sbr sbs sby sdb sdd sdi sdk sdr sds sdy sib sid sii sik sir sis sk- skb skd ski skk skr sks sky sr- srb srd sri srk srr srs sry ss- ssb ssd ssi ssk ssr sss sy- syb syd syi syk syr sys ybi ybr ybs yby yds ydy yid yii yir yis yki ykk yrs ysb ysi ysk ysr yss ysy yyb yys yyy