-al -ol a-a a-b aaa aab aae aal aan aao aap ab- aba abb abe abl abn abo abp aea aeb aee ael aen aeo aep al- ala alb ale all aln alo alp an- ana anb ane anl ann ano anp aoa aob aoe aol aon aoo aop ap- apa apb ape apl apn apo app b-p baa bab bae bal ban bao bap bba bbb bbe bbl bbn bbo bbp be- bea beb bee bel ben beo bep bla blb ble bll bln blo blp bna bnb bne bnl bnn bno bnp boa bob boe bol bon boo bop bpa bpb bpe bpl bpn bpo bpp eaa eab eae eal ean eao eap eba ebb ebe ebl ebn ebo ebp eea eeb eee eel een eeo eep ela elb ele ell eln elo elp en- ena enb ene enl enn eno enp eo- eoa eob eoe eol eon eoo eop ep- epa epb epe epl epn epo epp l-p la- laa lab lae lal lan lao lap lba lbb lbe lbl lbo lbp lea leb lee lel len leo lep lla llb lle lll lln llo llp lna lnb lne lnl lnn lno lnp loa lob loe lol lon loo lop lpa lpb lpe lpl lpn lpo lpp naa nab nae nal nan nao nap nba nbb nbe nbl nbn nbo nbp ne- nea neb nee nel nen neo nep nla nlb nle nll nln nlo nlp nna nnb nne nnl nnn nno nnp no- noa nob noe nol non noo nop npa npb npe npl npn npo npp oaa oab oae oal oan oao oap ob- oba obb obe obl obn obo obp oea oeb oee oel oen oeo oep ola olb ole oll oln olo olp on- ona onb one onl onn ono onp oo- ooa oob ool oon ooo oop op- opa opb ope opl opn opo opp p-p paa pab pae pal pan pao pap pba pbb pbe pbl pbn pbo pbp pea peb pee pel pen peo pep pla plb ple pll pln plo plp pn- pna pnb pne pnl pnn pno pnp poa pob poe pol pon poo pop ppa ppb ppe ppl ppn ppo ppp