-er -ol b-p bbb bbe bbi bbk bbl bbn bbo bbp bbr be- beb bee bei bek bel ben beo bep ber bi- bib bie bii bik bil bin bio bip bir bkb bke bkk bkl bkn bko bkp bkr blb ble bli blk bll bln blo blp blr bnb bne bni bnk bnl bnn bno bnp bnr bob boe boi bok bol bon boo bop bor bpb bpe bpi bpl bpn bpo bpp bpr brb bre bri brk brl brn bro brp brr ebb ebe ebi ebk ebl ebn ebo ebp ebr eeb eee eek eel een eeo eep eer eib eie eii eik eil ein eio eip eir ekb eke eki ekl eko ekp ekr elb ele eli elk ell eln elo elp elr en- enb ene eni enk enl enn eno enp enr eo- eob eoe eoi eok eol eon eoo eop eor ep- epb epe epi epl epn epo epp epr erb ere eri erk erl ern ero erp err ibb ibe ibi ibk ibl ibn ibo ibp ibr ie- iee iei iek iel ien iep ier iib iie iii iil iin iio iip iir ikb ike iki ikk ikl iko ikr il- ilb ile ili ilk ill iln ilo ilp ilr in- inb ine ini ink inl inn ino inp inr io- iob ioe ioi iol ion ioo iop ior ipb ipe ipi ipl ipn ipo ipp ipr ir- irb ire iri irk irl irn iro irp irr kbb kbe kbi kbk kbl kbn kbo kbp kbr ke- keb kee kei kek kel ken keo kep ker kib kie kii kik kil kin kio kip kir kkb kke kki kkk kkl kkn kkp kkr kl- klb kli klo klr kn- kne kni knk knl knn kno knp knr kob koe koi kok kol kon koo kop kor kpe kpi kpk kpl kpn kpo kpp kpr kri krk krl krn kro krp krr l-p lbb lbe lbi lbk lbl lbo lbp lbr leb lee lei lek lel len leo lep ler lib lie lii lik lil lin lio lip lir lkb lkl lkp lkr llb lle lli llk lll lln llo llp llr lnb lne lni lnk lnl lnn lno lnp lnr lob loe loi lok lol lon loo lop lor lpb lpe lpi lpk lpl lpn lpo lpp lpr lrb lri lrk lrn lro lrp lrr n-i nbb nbe nbi nbk nbl nbn nbo nbp nbr ne- neb nee nei nek nel nen neo nep ner nib nie nii nik nil nin nio nip nir nke nki nkk nkn nko nkp nkr nlb nle nli nlk nll nln nlo nlp nlr nnb nne nni nnk nnl nnn nno nnp no- nob noe noi nok nol non noo nop nor npb npe npi npl npn npo npp npr nrb nre nri nrk nrl nrn nro nrp nrr o-i ob- obb obe obi obk obl obn obo obp obr oeb oee oei oel oen oeo oep oer oib oie oii oik oil oin oio oip oir okb oke oki okk okl oko okp okr olb ole oli olk oll oln olo olp on- onb one oni onk onl onn ono onp onr oo- oob ooi ook ool oon ooo oop oor op- opb ope opi opk opl opn opo opp opr or- orb ore ori ork orl orn oro orp orr p-p pbb pbe pbi pbk pbl pbn pbo pbp pbr peb pee pei pek pel pen peo pep per pib pie pii pik pil pin pio pip pir pkb pke pki pkl pkn pko pkp pkr plb ple pli plk pll pln plo plp plr pn- pnb pne pni pnk pnl pnn pno pnp pnr pob poe poi pok pol pon poo pop por ppb ppe ppi ppk ppl ppn ppo ppp ppr prb pre pri prk prl prn pro prp prr rbb rbe rbi rbk rbl rbn rbo rbp rbr re- reb ree rei rek rel ren reo rep rer rib rie rii rik ril rin rio rip rir rkb rke rkk rko rkp rle rli rll rln rlo rlp rlr rnb rni rnn rno rnp rnr rob roe roi rok rol ron roo rop ror rpb rpe rpi rpk rpl rpn rpo rpp rpr rrb rri rrk rrl rrn rrp rrr