-al -ol a-a a-b aaa aab aag aak aal aao aas aav ab- aba abb abg abk abl abo abs abv ag- aga agb agg agk agl ago ags agv aka akb akg akk akl ako aks akv al- ala alb alg alk all alo als alv aoa aob aog aok aol aoo aos aov as- asa asb asg ask asl aso ass asv av- ava avb avg avk avl avo avs baa bab bag bak bal bao bas bav bba bbb bbg bbk bbl bbo bbs bga bgb bgg bgk bgl bgo bgs bgv bka bkb bkg bkk bkl bko bks bkv bla blb blg blk bll blo bls blv boa bob bog bok bol boo bos bov bsa bsb bsg bsk bsl bso bss bsv bva bvb bvg bvk bvl bvo bvs bvv gaa gab gag gak gal gao gas gav gba gbg gbk gbl gbo gbs gbv gga ggb ggg ggo ggs ggv gka gkb gko gks gla glb glg glk gll glo gls glv goa gob gog gok gol goo gos gov gsa gsb gsg gsk gsl gso gss gsv gva gvb gvg gvk gvl gvo gvs ka- kaa kab kag kak kal kao kas kav kba kbb kbk kbl kbo kbs kga kgb kgl kgo kgs kgv kkb kkk kkl kks kkv kl- kla klb klg klo kls klv koa kob kog kok kol koo kos ksa ksb ksg ksk ksl kso kss ksv kva kvb kvk kvo kvs kvv la- laa lab lag lak lal lao las lav lba lbb lbg lbk lbl lbo lbs lbv lga lgb lgg lgk lgl lgo lgs lgv lka lkb lkg lkl lks lla llb llg llk lll llo lls llv loa lob log lok lol loo los lov lsa lsb lsg lsk lsl lso lss lsv lva lvb lvg lvl lvs lvv oaa oab oag oak oal oao oas oav ob- oba obb obg obk obl obo obs obv oga ogg ogl ogo ogs oka okb okg okk okl oko oks ola olb olg olk oll olo ols oo- ooa oob oog ook ool ooo oos oov os- osa osb osg osk osl oso oss osv ov- ova ovb ovl ovo ovs ovv saa sab sag sak sal sao sas sav sba sbb sbg sbk sbl sbo sbs sbv sga sgb sgg sgk sgl sgo sgs sgv sk- ska skb skg skk skl sko sks sla slb slg slk sll slo sls slv soa sob sog sok sol soo sos sov ss- ssa ssb ssg ssk ssl sso sss ssv sva svb svg svk svl svo svs svv v-a vaa vab vag vak val vao vas vav vba vbg vbk vbl vbo vbs vbv vga vgg vgl vgo vgs vka vkb vkg vl- vla vlb vlk vll vlo vls vlv voa vob vog vok vol voo vos vov vsa vsb vsg vsk vsl vso vss vsv vva vvb vvg vvo vvs vvv