-er -ol bbb bbe bbf bbi bbl bbm bbo bbr bbs be- beb bee bef bei bel bem beo ber bes bfb bfe bff bfi bfl bfm bfo bfr bfs bi- bib bie bif bii bil bim bio bir bis blb ble blf bli bll blm blo blr bls bmb bme bmf bmi bml bmm bmo bmr bms bob boe bof boi bol bom boo bor bos brb bre brf bri brl brm bro brr brs bsb bse bsf bsi bsl bsm bso bsr bss ebb ebe ebf ebi ebl ebm ebo ebr ebs eeb eee eef eel eem eeo eer ees ef- efb efe eff efi efl efm efo efr efs eib eie eif eii eil eim eio eir eis elb ele elf eli ell elm elo elr els em- emb eme emf emi eml emm emo emr ems eo- eob eoe eof eoi eol eom eoo eor eos erb ere erf eri erl erm ero err ers es- esb ese esf esi esl esm eso esr ess fbb fbe fbf fbi fbl fbm fbo fbr fbs feb fee fef fei fel fem feo fer fes ffe fff ffi ffl ffm ffo ffr ffs fib fie fif fii fil fim fir fis flb fle flf fli fll flm flo flr fls fmb fme fmf fmi fml fmm fmo fmr fms fob foe fof foi fol fom foo for fos frb fre frf fri frl frm fro frr frs fsb fse fsf fsi fsl fsm fso fsr fss i-f ibb ibe ibf ibi ibl ibm ibo ibr ibs ie- iee ief iei iel iem ier ies ifb ife iff ifi ifl ifm ifo ifr ifs iib iie iif iii iil iim iio iir iis il- ilb ile ilf ili ill ilm ilo ilr ils im- imb ime imf imi iml imm imo ims io- iob ioe iof ioi iol iom ioo ior ios ir- irb ire irf iri irl irm iro irr irs is- isb ise isf isi isl ism iso isr iss lbb lbe lbf lbi lbl lbm lbo lbr lbs leb lee lef lei lel lem leo ler les lfb lfe lff lfi lfl lfm lfo lfr lfs lib lie lif lii lil lim lio lir lis llb lle llf lli lll llm llo llr lls lmb lme lmf lmi lml lmm lmo lmr lms lob loe lof loi lol lom loo lor los lrb lrf lri lrm lro lrr lrs lsb lse lsf lsi lsl lsm lso lsr lss m-f m-o m-r mbb mbe mbf mbi mbl mbm mbo mbr mbs meb mee mef mei mel mem meo mer mes mfb mfe mff mfi mfl mfm mfo mfr mfs mi- mib mie mif mii mil mim mio mir mis mlb mle mlf mli mll mlm mlo mlr mls mmb mme mmf mmi mml mmm mmo mmr mms mob moe mof moi mol mom moo mor mos mrb mre mrf mri mrl mrm mro mrr mrs msb mse msf msi msl msm mso msr mss o-i ob- obb obe obf obi obl obm obo obr obs oeb oee oef oei oel oem oeo oer oes of- ofb ofe off ofi ofl ofm ofo ofr ofs oib oie oif oii oil oim oio oir ois olb ole olf oli oll olm olo ols om- omb ome omf omi oml omm omo omr oms oo- oob oof ooi ool oom ooo oor oos or- orb ore orf ori orl orm oro orr ors os- osb ose osf osi osl osm oso osr oss rbb rbe rbf rbi rbl rbm rbo rbr rbs re- reb ree ref rei rel rem reo rer res rfb rfe rff rfi rfl rfm rfo rfr rfs rib rie rif rii ril rim rio rir ris rle rlf rli rll rlm rlo rlr rls rmb rme rmf rmi rml rmm rmo rmr rms rob roe rof roi rol rom roo ror ros rrb rrf rri rrl rrm rrr rrs rsb rse rsf rsi rsl rsm rso rsr rss sbb sbe sbf sbi sbl sbm sbo sbr sbs se- seb see sef sei sel sem seo ser ses sfb sfe sff sfi sfl sfm sfo sfr sfs sib sie sif sii sil sim sio sir sis slb sle slf sli sll slm slo slr sls smb sme smf smi sml smm smo smr sms sob soe sof soi sol som soo sor sos sr- srb sre srf sri srl srm sro srr srs ss- ssb sse ssf ssi ssl ssm sso ssr sss