-al -ol a-a a-b aaa aab aae aak aal aao aap ab- aba abb abe abk abl abo abp aea aeb aee aek ael aeo aep aka akb ake akk akl ako akp al- ala alb ale alk all alo alp aoa aob aoe aok aol aoo aop ap- apa apb ape apk apl apo app b-p baa bab bae bak bal bao bap bba bbb bbe bbk bbl bbo bbp be- bea beb bee bek bel beo bep bka bkb bke bkk bkl bko bkp bla blb ble blk bll blo blp boa bob boe bok bol boo bop bpa bpb bpe bpl bpo bpp eaa eab eae eak eal eao eap eba ebb ebe ebk ebl ebo ebp eea eeb eee eek eel eeo eep eka ekb eke ekl eko ekp ela elb ele elk ell elo elp eo- eoa eob eoe eok eol eoo eop ep- epa epb epe epl epo epp ka- kaa kab kae kak kal kao kap kba kbb kbe kbk kbl kbo kbp ke- kea keb kee kek kel keo kep kkb kke kkk kkl kkp kl- kla klb klo koa kob koe kok kol koo kop kpa kpe kpk kpl kpo kpp l-p la- laa lab lae lak lal lao lap lba lbb lbe lbk lbl lbo lbp lea leb lee lek lel leo lep lka lkb lkl lkp lla llb lle llk lll llo llp loa lob loe lok lol loo lop lpa lpb lpe lpk lpl lpo lpp oaa oab oae oak oal oao oap ob- oba obb obe obk obl obo obp oea oeb oee oel oeo oep oka okb oke okk okl oko okp ola olb ole olk oll olo olp oo- ooa oob ook ool ooo oop op- opa opb ope opk opl opo opp p-p paa pab pae pak pal pao pap pba pbb pbe pbk pbl pbo pbp pea peb pee pek pel peo pep pka pkb pke pkl pko pkp pla plb ple plk pll plo plp poa pob poe pok pol poo pop ppa ppb ppe ppk ppl ppo ppp