-er -ol b-p bbb bbe bbi bbl bbo bbp bbr bbs be- beb bee bei bel beo bep ber bes bi- bib bie bii bil bio bip bir bis blb ble bli bll blo blp blr bls bob boe boi bol boo bop bor bos bpb bpe bpi bpl bpo bpp bpr bps brb bre bri brl bro brp brr brs bsb bse bsi bsl bso bsp bsr bss ebb ebe ebi ebl ebo ebp ebr ebs eeb eee eel eeo eep eer ees eib eie eii eil eio eip eir eis elb ele eli ell elo elp elr els eo- eob eoe eoi eol eoo eop eor eos ep- epb epe epi epl epo epp epr eps erb ere eri erl ero erp err ers es- esb ese esi esl eso esp esr ess ibb ibe ibi ibl ibo ibp ibr ibs ie- iee iei iel iep ier ies iib iie iii iil iio iip iir iis il- ilb ile ili ill ilo ilp ilr ils io- iob ioe ioi iol ioo iop ior ios ipb ipe ipi ipl ipo ipp ipr ips ir- irb ire iri irl iro irp irr irs is- isb ise isi isl iso isp isr iss l-p lbb lbe lbi lbl lbo lbp lbr lbs leb lee lei lel leo lep ler les lib lie lii lil lio lip lir lis llb lle lli lll llo llp llr lls lob loe loi lol loo lop lor los lpb lpe lpi lpl lpo lpp lpr lps lrb lri lro lrp lrr lrs lsb lse lsi lsl lso lsp lsr lss o-i ob- obb obe obi obl obo obp obr obs oeb oee oei oel oeo oep oer oes oib oie oii oil oio oip oir ois olb ole oli oll olo olp ols oo- oob ooi ool ooo oop oor oos op- opb ope opi opl opo opp opr ops or- orb ore ori orl oro orp orr ors os- osb ose osi osl oso osp osr oss p-p pbb pbe pbi pbl pbo pbp pbr pbs peb pee pei pel peo pep per pes pib pie pii pil pio pip pir pis plb ple pli pll plo plp plr pls pob poe poi pol poo pop por pos ppb ppe ppi ppl ppo ppp ppr pps prb pre pri prl pro prp prr prs ps- psb pse psi psl pso psp psr pss rbb rbe rbi rbl rbo rbp rbr rbs re- reb ree rei rel reo rep rer res rib rie rii ril rio rip rir ris rle rli rll rlo rlp rlr rls rob roe roi rol roo rop ror ros rpb rpe rpi rpl rpo rpp rpr rps rrb rri rrl rrp rrr rrs rsb rse rsi rsl rso rsp rsr rss sbb sbe sbi sbl sbo sbp sbr sbs se- seb see sei sel seo sep ser ses sib sie sii sil sio sip sir sis slb sle sli sll slo slp slr sls sob soe soi sol soo sop sor sos spb spe spi spl spo spp spr sps sr- srb sre sri srl sro srp srr srs ss- ssb sse ssi ssl sso ssp ssr sss