-er -ol bbb bbe bbf bbl bbo bbr bbs bbt be- beb bee bef bel beo ber bes bet bfb bfe bff bfj bfl bfo bfr bfs bft bjf bjj bjr bjs bjt blb ble blf blj bll blo blr bls blt bob boe bof boj bol boo bor bos bot brb bre brf brj brl bro brr brs brt bsb bse bsf bsj bsl bso bsr bss bst btb bte btf btl bto btr bts btt ebb ebe ebf ebj ebl ebo ebr ebs ebt eeb eee eef eel eeo eer ees eet ef- efb efe eff efl efo efr efs eft ejf ejl ejo ejt elb ele elf ell elo elr els elt eo- eob eoe eof eol eoo eor eos eot erb ere erf erl ero err ers ert es- esb ese esf esl eso esr ess est etb ete etf etj etl eto etr ets ett fbb fbe fbf fbl fbo fbr fbs fbt feb fee fef fel feo fer fes fet ffe fff ffl ffo ffr ffs fft fjb fjs flb fle flf fll flo flr fls flt fob foe fof fol foo for fos fot frb fre frf frj frl fro frr frs frt fsb fse fsf fsj fsl fso fsr fss fst ftb fte ftf ftl fto ftr fts ftt jbf jbj jbl jbo jbr jbs jbt jeb jee jef jej jel jeo jer jes jet jfb jfe jff jfj jfl jfo jfr jfs jft jjb jjf jjj jjl jjr jjs jlb jle jlf jll jlo jlr jls jlt job joe jof joj jol joo jor jos jot jrb jrf jrl jro jrr jrs jrt jsb jse jsf jsj jsl jso jsr jss jst jtb jte jtf jtl jtr jts jtt lbb lbe lbf lbj lbl lbo lbr lbs lbt leb lee lef lej lel leo ler les let lfb lfe lff lfl lfo lfr lfs lft lje ljf ljj ljs llb lle llf llj lll llo llr lls llt lob loe lof loj lol loo lor los lot lrb lrf lro lrr lrs lrt lsb lse lsf lsj lsl lso lsr lss lst ltb lte ltf ltl lto ltr lts ltt ob- obb obe obf obj obl obo obr obs obt oeb oee oef oel oeo oer oes oet of- ofb ofe off ofl ofo ofr ofs oft ojb oje ojo ojs olb ole olf oll olo ols olt oo- oob oof ool ooo oor oos oot or- orb ore orf orl oro orr ors ort os- osb ose osf osj osl oso osr oss ost ot- otb ote otf otl oto otr ots ott rbb rbe rbf rbl rbo rbr rbs rbt re- reb ree ref rel reo rer res ret rfb rfe rff rfj rfl rfo rfr rfs rft rjf rjr rle rlf rll rlo rlr rls rlt rob roe rof roj rol roo ror ros rot rrb rrf rrl rrr rrs rrt rsb rse rsf rsj rsl rso rsr rss rst rtb rte rtf rtj rtl rto rtr rts rtt sbb sbe sbf sbj sbl sbo sbr sbs sbt se- seb see sef sej sel seo ser ses set sfb sfe sff sfj sfl sfo sfr sfs sft sjb sje sjf sjj sjr sjs sjt slb sle slf slj sll slo slr sls slt sob soe sof soj sol soo sor sos sot sr- srb sre srf srj srl sro srr srs srt ss- ssb sse ssf ssj ssl sso ssr sss sst stb ste stf stj stl sto str sts stt tbb tbe tbf tbj tbl tbo tbr tbs tbt te- teb tee tef tej tel teo ter tes tet tfb tfe tff tfj tfl tfo tfr tfs tft tje tjf tjo tjr tjs tle tlf tlj tll tlo tlr tls tlt to- tob toe tof toj tol too tor tos tot trb tre trf trl tro trr trs trt tsb tse tsf tsj tsl tso tsr tss tst ttb tte ttf ttl tto ttr tts ttt