-ly b-u bbb bbf bbi bbl bbs bbt bbu bby bfb bff bfi bfl bfs bft bfu bfy bi- bib bif bii bil bis bit biu biy blb blf bli bll bls blt blu bly bsb bsf bsi bsl bss bst bsu bsy btb btf bti btl bts btt btu bty bub buf bui bul bus but buu buy by- byf byi byl bys byt byu fbb fbf fbi fbl fbs fbt fbu fff ffi ffl ffs fft ffu ffy fib fif fii fil fis fit fiu flb flf fli fll fls flt flu fly fsb fsf fsi fsl fss fst fsu ftb ftf fti ftl fts ftt ftu fty fub fuf fui ful fus fut fuu fy- fyb fyi i-f ibb ibf ibi ibl ibs ibt ibu iby ifb iff ifi ifl ifs ift ifu ify iib iif iii iil iis iit iiu il- ilb ilf ili ill ils ilt ilu ily is- isb isf isi isl iss ist isu isy itb itf iti itl its itt itu ity iu- iub iui ius iut iys iyt iyy lbb lbf lbi lbl lbs lbt lbu lfb lff lfi lfl lfs lft lfu lib lif lii lil lis lit liu llb llf lli lll lls llt llu lly lsb lsf lsi lsl lss lst lsu ltb ltf lti ltl lts ltt ltu lub luf lui lul lus lut luu luy lyf lyl lys lyt sbb sbf sbi sbl sbs sbt sbu sby sfb sff sfi sfl sfs sft sfu sib sif sii sil sis sit siu slb slf sli sll sls slt slu sly ss- ssb ssf ssi ssl sss sst ssu stb stf sti stl sts stt stu sty sub suf sui sul sus sut suu suy sy- syb syi syl sys syt syu tbb tbf tbi tbl tbs tbt tbu tfb tff tfi tfl tfs tft tfu tib tif tii til tis tit tiu tiy tlf tli tll tls tlt tlu tsb tsf tsi tsl tss tst tsu tsy ttb ttf tti ttl tts ttt ttu tty tub tuf tui tul tus tut tuu tuy tyf tyl tys tyt ubb ubf ubi ubl ubs ubt ubu uby uff ufi ufl ufs uft ufu uib uif uii uil uis uit uiu ulb ulf uli ull uls ult ulu uly usb usf usi usl uss ust usu utb utf uti utl uts utt utu uty uus uut uuu uyi uys uyu ybf ybi ybl ybs yby yff yfs yft yfu yif yii yis yit yli yll yls ylt yly ysb ysi ysl yss yst ysu ysy ytf ytl yts ytt ytu yui yul yus yut yuu yuy yyb yyf yys yyt yyu yyy