-er -ey b-u bbb bbe bbi bbr bbs bbu bby be- beb bee bei ber bes beu bev bey bi- bib bie bii bir bis biu biv biy brb bre bri brr brs bru brv bry bsb bse bsi bsr bss bsu bsv bsy bub bue bui bur bus buu buy bvb bve bvi bvr bvs bvu bvv by- bye byi byr bys byu ebb ebe ebi ebr ebs ebu ebv eby eeb eee eer ees eev eey eib eie eii eir eis eiu eiv erb ere eri err ers eru erv ery es- esb ese esi esr ess esu esv esy eu- eub eue eui eur eus euv evb eve evi evr evs evv evy eye eyr eys i-v ibb ibe ibi ibr ibs ibu ibv iby ie- iee iei ier ies iev iey iib iie iii iir iis iiu ir- irb ire iri irr irs iru irv iry is- isb ise isi isr iss isu isv isy iu- iub iue iui iur ius ivb ive ivi ivr ivs ivu ivv ivy iye iyr iys iyy rbb rbe rbi rbr rbs rbu re- reb ree rei rer res reu rev rey rib rie rii rir ris riv riy rrb rri rrr rrs rru rsb rse rsi rsr rss rsu rsv rub rue rui rur rus ruu ruv ruy rvb rve rvi rvr rvs rvu rvv rvy ry- rye ryr rys ryu ryy sbb sbe sbi sbr sbs sbu sbv sby se- seb see sei ser ses seu sev sey sib sie sii sir sis siu siv sr- srb sre sri srr srs srv sry ss- ssb sse ssi ssr sss ssu ssv sub sue sui sur sus suu suv suy svb sve svi svr svs svu svv svy sy- syb sye syi syr sys syu ubb ube ubi ubr ubs ubu ubv uby ueb uee uei uer ues uey uib uie uii uir uis uiu ur- urb ure uri urr urs uru ury usb use usi usr uss usu usv uue uur uus uuu uvb uve uvs uvu uvv uyi uys uyu v-e vbi vbr vbs vbv veb vee vei ver ves veu vey vi- vib vie vii vir vis viu viv viy vrb vre vri vrr vrs vru vry vsb vse vsi vsr vss vsu vsv vue vur vus vuv vvb vvi vvr vvs vvv vye ybe ybi ybr ybs yby yeb yee yei yer yes yev yey yie yii yir yis yre yrs yru ysb yse ysi ysr yss ysu ysy yue yui yur yus yuu yuv yuy yve yvi yvr yvy yyb yye yys yyu yyy