-er -ol b-p bbb bbe bbi bbl bbo bbp bbr be- beb bee bei bel beo bep ber bi- bib bie bii bil bio bip bir blb ble bli bll blo blp blr bob boe boi bol boo bop bor bpb bpe bpi bpl bpo bpp bpr brb bre bri brl bro brp brr ebb ebe ebi ebl ebo ebp ebr eeb eee eel eeo eep eer eib eie eii eil eio eip eir elb ele eli ell elo elp elr eo- eob eoe eoi eol eoo eop eor ep- epb epe epi epl epo epp epr erb ere eri erl ero erp err ibb ibe ibi ibl ibo ibp ibr ie- iee iei iel iep ier iib iie iii iil iio iip iir il- ilb ile ili ill ilo ilp ilr io- iob ioe ioi iol ioo iop ior ipb ipe ipi ipl ipo ipp ipr ir- irb ire iri irl iro irp irr l-p lbb lbe lbi lbl lbo lbp lbr leb lee lei lel leo lep ler lib lie lii lil lio lip lir llb lle lli lll llo llp llr lob loe loi lol loo lop lor lpb lpe lpi lpl lpo lpp lpr lrb lri lro lrp lrr o-i ob- obb obe obi obl obo obp obr oeb oee oei oel oeo oep oer oib oie oii oil oio oip oir olb ole oli oll olo olp oo- oob ooi ool ooo oop oor op- opb ope opi opl opo opp opr or- orb ore ori orl oro orp orr p-p pbb pbe pbi pbl pbo pbp pbr peb pee pei pel peo pep per pib pie pii pil pio pip pir plb ple pli pll plo plp plr pob poe poi pol poo pop por ppb ppe ppi ppl ppo ppp ppr prb pre pri prl pro prp prr rbb rbe rbi rbl rbo rbp rbr re- reb ree rei rel reo rep rer rib rie rii ril rio rip rir rle rli rll rlo rlp rlr rob roe roi rol roo rop ror rpb rpe rpi rpl rpo rpp rpr rrb rri rrl rrp rrr