-ly b-u bbb bbi bbl bbr bbs bbu bby bi- bib bii bil bir bis biu biv biy blb bli bll blr bls blu blv bly brb bri brl brr brs bru brv bry bsb bsi bsl bsr bss bsu bsv bsy bub bui bul bur bus buu buy bvb bvi bvl bvr bvs bvu bvv by- byi byl byr bys byu i-v ibb ibi ibl ibr ibs ibu ibv iby iib iii iil iir iis iiu il- ilb ili ill ilr ils ilu ilv ily ir- irb iri irl irr irs iru irv iry is- isb isi isl isr iss isu isv isy iu- iub iui iur ius ivb ivi ivl ivr ivs ivu ivv ivy iyr iys iyy lbb lbi lbl lbr lbs lbu lbv lib lii lil lir lis liu liv llb lli lll llr lls llu llv lly lrb lri lrr lrs lru lrv lry lsb lsi lsl lsr lss lsu lsv lub lui lul lur lus luu luv luy lvb lvi lvl lvr lvs lvv lyl lyr lys rbb rbi rbl rbr rbs rbu rib rii ril rir ris riv riy rli rll rlr rls rlu rly rrb rri rrl rrr rrs rru rsb rsi rsl rsr rss rsu rsv rub rui rur rus ruu ruv ruy rvb rvi rvl rvr rvs rvu rvv rvy ry- ryr rys ryu ryy sbb sbi sbl sbr sbs sbu sbv sby sib sii sil sir sis siu siv slb sli sll slr sls slu slv sly sr- srb sri srl srr srs srv sry ss- ssb ssi ssl ssr sss ssu ssv sub sui sul sur sus suu suv suy svb svi svl svr svs svu svv svy sy- syb syi syl syr sys syu ubb ubi ubl ubr ubs ubu ubv uby uib uii uil uir uis uiu ulb uli ull ulr uls ulu ulv uly ur- urb uri url urr urs uru ury usb usi usl usr uss usu usv uur uus uuu uvb uvl uvs uvu uvv uyi uys uyu vbi vbl vbr vbs vbv vi- vib vii vil vir vis viu viv viy vl- vlb vll vls vlv vly vrb vri vrr vrs vru vry vsb vsi vsl vsr vss vsu vsv vul vur vus vuv vvb vvi vvr vvs vvv vyl ybi ybl ybr ybs yby yii yir yis yli yll ylr yls yly yrs yru ysb ysi ysl ysr yss ysu ysy yui yul yur yus yuu yuv yuy yvi yvr yvy yyb yys yyu yyy