-er -ey bbb bbe bbi bbk bbr bbs bbt bby be- beb bee bei bek ber bes bet bev bey bi- bib bie bii bik bir bis bit biv biy bkb bke bkk bkr bks bkt bkv brb bre bri brk brr brs brt brv bry bsb bse bsi bsk bsr bss bst bsv bsy btb bte bti btk btr bts btt btv bty bvb bve bvi bvk bvr bvs bvt bvv by- bye byi byk byr bys byt ebb ebe ebi ebk ebr ebs ebt ebv eby eeb eee eek eer ees eet eev eey eib eie eii eik eir eis eit eiv ekb eke eki ekr eks ekt ekv eky erb ere eri erk err ers ert erv ery es- esb ese esi esk esr ess est esv esy etb ete eti etk etr ets ett etv ety evb eve evi evr evs evt evv evy eye eyr eys eyt i-v ibb ibe ibi ibk ibr ibs ibt ibv iby ie- iee iei iek ier ies iet iev iey iib iie iii iir iis iit ikb ike iki ikk ikr iks ikt ikv ir- irb ire iri irk irr irs irt irv iry is- isb ise isi isk isr iss ist isv isy itb ite iti itk its itt itv ity ivb ive ivi ivr ivs ivt ivv ivy iye iyr iys iyt iyy k-t kbb kbe kbi kbk kbr kbs ke- keb kee kei kek ker kes ket kev key kib kie kii kik kir kis kit kiv kkb kke kki kkk kkr kks kkt kkv kky kri krk krr krs krt krv kry ksb kse ksi ksk ksr kss kst ksv ktb kte ktk ktr kts ktt ktv kvb kvi kvk kvr kvs kvv kye kyr kys kyt rbb rbe rbi rbk rbr rbs rbt re- reb ree rei rek rer res ret rev rey rib rie rii rik rir ris rit riv riy rkb rke rkk rks rkt rkv rky rrb rri rrk rrr rrs rrt rsb rse rsi rsk rsr rss rst rsv rtb rte rti rtk rtr rts rtt rtv rty rvb rve rvi rvr rvs rvt rvv rvy ry- rye ryk ryr rys ryy sbb sbe sbi sbk sbr sbs sbt sbv sby se- seb see sei sek ser ses set sev sey sib sie sii sik sir sis sit siv sk- skb ske ski skk skr sks skt sky sr- srb sre sri srk srr srs srt srv sry ss- ssb sse ssi ssk ssr sss sst ssv stb ste sti stk str sts stt stv sty svb sve svi svk svr svs svt svv svy sy- syb sye syi syk syr sys syt tbb tbe tbi tbk tbr tbs tbt tbv te- teb tee tei tek ter tes tet tev tey tib tie tii tik tir tis tit tiv tiy tkb tke tkk tkr tks tkt tky trb tre tri trk trr trs trt trv try tsb tse tsi tsk tsr tss tst tsv tsy ttb tte tti ttk ttr tts ttt ttv tty tvb tve tvi tvk tvr tvs tvt tvy tye tyr tys tyt v-e vbi vbk vbr vbs vbv veb vee vei vek ver ves vet vey vi- vib vie vii vik vir vis vit viv viy vkb vkt vrb vre vri vrk vrr vrs vrt vry vsb vse vsi vsk vsr vss vst vsv vtb vte vti vtk vtr vts vtt vtv vty vvb vvi vvr vvs vvt vvv vye vyt ybe ybi ybr ybs yby yeb yee yei yek yer yes yet yev yey yie yii yir yis yit yki ykk yre yrs yrt ysb yse ysi ysk ysr yss yst ysy yte ytk ytr yts ytt ytv yve yvi yvr yvy yyb yye yys yyt yyy