-er -ol bbb bbe bbf bbi bbl bbo bbr bbs be- beb bee bef bei bel beo ber bes bfb bfe bff bfi bfl bfo bfr bfs bi- bib bie bif bii bil bio bir bis blb ble blf bli bll blo blr bls bob boe bof boi bol boo bor bos brb bre brf bri brl bro brr brs bsb bse bsf bsi bsl bso bsr bss ebb ebe ebf ebi ebl ebo ebr ebs eeb eee eef eel eeo eer ees ef- efb efe eff efi efl efo efr efs eib eie eif eii eil eio eir eis elb ele elf eli ell elo elr els eo- eob eoe eof eoi eol eoo eor eos erb ere erf eri erl ero err ers es- esb ese esf esi esl eso esr ess fbb fbe fbf fbi fbl fbo fbr fbs feb fee fef fei fel feo fer fes ffe fff ffi ffl ffo ffr ffs fib fie fif fii fil fir fis flb fle flf fli fll flo flr fls fob foe fof foi fol foo for fos frb fre frf fri frl fro frr frs fsb fse fsf fsi fsl fso fsr fss i-f ibb ibe ibf ibi ibl ibo ibr ibs ie- iee ief iei iel ier ies ifb ife iff ifi ifl ifo ifr ifs iib iie iif iii iil iio iir iis il- ilb ile ilf ili ill ilo ilr ils io- iob ioe iof ioi iol ioo ior ios ir- irb ire irf iri irl iro irr irs is- isb ise isf isi isl iso isr iss lbb lbe lbf lbi lbl lbo lbr lbs leb lee lef lei lel leo ler les lfb lfe lff lfi lfl lfo lfr lfs lib lie lif lii lil lio lir lis llb lle llf lli lll llo llr lls lob loe lof loi lol loo lor los lrb lrf lri lro lrr lrs lsb lse lsf lsi lsl lso lsr lss o-i ob- obb obe obf obi obl obo obr obs oeb oee oef oei oel oeo oer oes of- ofb ofe off ofi ofl ofo ofr ofs oib oie oif oii oil oio oir ois olb ole olf oli oll olo ols oo- oob oof ooi ool ooo oor oos or- orb ore orf ori orl oro orr ors os- osb ose osf osi osl oso osr oss rbb rbe rbf rbi rbl rbo rbr rbs re- reb ree ref rei rel reo rer res rfb rfe rff rfi rfl rfo rfr rfs rib rie rif rii ril rio rir ris rle rlf rli rll rlo rlr rls rob roe rof roi rol roo ror ros rrb rrf rri rrl rrr rrs rsb rse rsf rsi rsl rso rsr rss sbb sbe sbf sbi sbl sbo sbr sbs se- seb see sef sei sel seo ser ses sfb sfe sff sfi sfl sfo sfr sfs sib sie sif sii sil sio sir sis slb sle slf sli sll slo slr sls sob soe sof soi sol soo sor sos sr- srb sre srf sri srl sro srr srs ss- ssb sse ssf ssi ssl sso ssr sss