-al -ol a-a a-b aaa aab aak aal aao aap ab- aba abb abk abl abo abp aka akb akk akl ako akp al- ala alb alk all alo alp aoa aob aok aol aoo aop ap- apa apb apk apl apo app b-p baa bab bak bal bao bap bba bbb bbk bbl bbo bbp bka bkb bkk bkl bko bkp bla blb blk bll blo blp boa bob bok bol boo bop bpa bpb bpl bpo bpp ka- kaa kab kak kal kao kap kba kbb kbk kbl kbo kbp kkb kkk kkl kkp kl- kla klb klo koa kob kok kol koo kop kpa kpk kpl kpo kpp l-p la- laa lab lak lal lao lap lba lbb lbk lbl lbo lbp lka lkb lkl lkp lla llb llk lll llo llp loa lob lok lol loo lop lpa lpb lpk lpl lpo lpp oaa oab oak oal oao oap ob- oba obb obk obl obo obp oka okb okk okl oko okp ola olb olk oll olo olp oo- ooa oob ook ool ooo oop op- opa opb opk opl opo opp p-p paa pab pak pal pao pap pba pbb pbk pbl pbo pbp pka pkb pkl pko pkp pla plb plk pll plo plp poa pob pok pol poo pop ppa ppb ppk ppl ppo ppp