-ly bbb bbi bbl bbr bbs bby bi- bib bii bil bir bis biy blb bli bll blr bls bly brb bri brl brr brs bry bsb bsi bsl bsr bss bsy by- byi byl byr bys ibb ibi ibl ibr ibs iby iib iii iil iir iis il- ilb ili ill ilr ils ily ir- irb iri irl irr irs iry is- isb isi isl isr iss isy iyr iys iyy lbb lbi lbl lbr lbs lib lii lil lir lis llb lli lll llr lls lly lrb lri lrr lrs lry lsb lsi lsl lsr lss lyl lyr lys rbb rbi rbl rbr rbs rib rii ril rir ris riy rli rll rlr rls rly rrb rri rrl rrr rrs rsb rsi rsl rsr rss ry- ryr rys ryy sbb sbi sbl sbr sbs sby sib sii sil sir sis slb sli sll slr sls sly sr- srb sri srl srr srs sry ss- ssb ssi ssl ssr sss sy- syb syi syl syr sys ybi ybl ybr ybs yby yii yir yis yli yll ylr yls yly yrs ysb ysi ysl ysr yss ysy yyb yys yyy