-al -ol a-a a-b aaa aab aak aal aan aao aas aav ab- aba abb abk abl abn abo abs abv aka akb akk akl akn ako aks akv al- ala alb alk all aln alo als alv an- ana anb ank anl ann ano ans anv aoa aob aok aol aon aoo aos aov as- asa asb ask asl asn aso ass asv av- ava avb avk avl avn avo avs baa bab bak bal ban bao bas bav bba bbb bbk bbl bbn bbo bbs bka bkb bkk bkl bkn bko bks bkv bla blb blk bll bln blo bls blv bna bnb bnk bnl bnn bno bns bnv boa bob bok bol bon boo bos bov bsa bsb bsk bsl bsn bso bss bsv bva bvb bvk bvl bvn bvo bvs bvv ka- kaa kab kak kal kan kao kas kav kba kbb kbk kbl kbn kbo kbs kkb kkk kkl kkn kks kkv kl- kla klb klo kls klv kn- kna knk knl knn kno koa kob kok kol kon koo kos ksa ksb ksk ksl ksn kso kss ksv kva kvb kvk kvn kvo kvs kvv la- laa lab lak lal lan lao las lav lba lbb lbk lbl lbo lbs lbv lka lkb lkl lks lla llb llk lll lln llo lls llv lna lnb lnk lnl lnn lno lns loa lob lok lol lon loo los lov lsa lsb lsk lsl lsn lso lss lsv lva lvb lvl lvn lvs lvv naa nab nak nal nan nao nas nav nba nbb nbk nbl nbn nbo nbs nbv nka nkk nkn nko nks nla nlb nlk nll nln nlo nls nlv nna nnb nnk nnl nnn nno nns nnv no- noa nob nok nol non noo nos nov nsa nsb nsk nsl nsn nso nss nsv nva nvb nvk nvl nvn nvv oaa oab oak oal oan oao oas oav ob- oba obb obk obl obn obo obs obv oka okb okk okl oko oks ola olb olk oll oln olo ols on- ona onb onk onl onn ono ons oo- ooa oob ook ool oon ooo oos oov os- osa osb osk osl osn oso oss osv ov- ova ovb ovl ovo ovs ovv saa sab sak sal san sao sas sav sba sbb sbk sbl sbn sbo sbs sbv sk- ska skb skk skl sko sks sla slb slk sll sln slo sls slv sna snb snk snl snn sno sns snv soa sob sok sol son soo sos sov ss- ssa ssb ssk ssl ssn sso sss ssv sva svb svk svl svn svo svs svv v-a vaa vab vak val van vao vas vav vba vbk vbl vbo vbs vbv vka vkb vl- vla vlb vlk vll vlo vls vlv vn- vna vnl vno vns vnv voa vob vok vol von voo vos vov vsa vsb vsk vsl vsn vso vss vsv vva vvb vvo vvs vvv