-al -ol a-a a-b aaa aab aak aal aao aap aar ab- aba abb abk abl abo abp abr aka akb akk akl ako akp akr al- ala alb alk all alo alp alr aoa aob aok aol aoo aop aor ap- apa apb apk apl apo app apr ar- ara arb ark arl aro arp arr b-p baa bab bak bal bao bap bar bba bbb bbk bbl bbo bbp bbr bka bkb bkk bkl bko bkp bkr bla blb blk bll blo blp blr boa bob bok bol boo bop bor bpa bpb bpl bpo bpp bpr bra brb brk brl bro brp brr ka- kaa kab kak kal kao kap kar kba kbb kbk kbl kbo kbp kbr kkb kkk kkl kkp kkr kl- kla klb klo klr koa kob kok kol koo kop kor kpa kpk kpl kpo kpp kpr kra krk krl kro krp krr l-p la- laa lab lak lal lao lap lar lba lbb lbk lbl lbo lbp lbr lka lkb lkl lkp lkr lla llb llk lll llo llp llr loa lob lok lol loo lop lor lpa lpb lpk lpl lpo lpp lpr lra lrb lrk lro lrp lrr oaa oab oak oal oao oap oar ob- oba obb obk obl obo obp obr oka okb okk okl oko okp okr ola olb olk oll olo olp oo- ooa oob ook ool ooo oop oor op- opa opb opk opl opo opp opr or- ora orb ork orl oro orp orr p-p paa pab pak pal pao pap par pba pbb pbk pbl pbo pbp pbr pka pkb pkl pko pkp pkr pla plb plk pll plo plp plr poa pob pok pol poo pop por ppa ppb ppk ppl ppo ppp ppr pra prb prk prl pro prp prr ra- raa rab rak ral rao rap rar rba rbb rbk rbl rbo rbp rbr rkb rkk rko rkp rla rll rlo rlp rlr roa rob rok rol roo rop ror rpa rpb rpk rpl rpo rpp rpr rra rrb rrk rrl rrp rrr