-al a-a a-b a-c a-t aaa aab aac aak aal aan aat aav ab- aba abb abc abk abl abn abt abv ac- aca acb acc ack acl acn act acv aka akb akc akk akl akn akv al- ala alb alc alk all aln alt alv an- ana anb anc ank anl ann ant anv at- ata atb atc atl atn att atv av- ava avb avc avk avl avn avt baa bab bac bak bal ban bat bav bba bbb bbc bbk bbl bbn bbt bca bcb bcc bck bcl bcn bct bcv bka bkb bkc bkk bkl bkn bkt bkv bla blb blc blk bll bln blt blv bna bnb bnc bnk bnl bnn bnt bnv bta btb btc btk btl btn btt btv bva bvb bvc bvk bvl bvn bvt bvv c-- caa cab cac cak cal can cat cav cba cbb cbc cbk cbl cbn cbt cbv cca ccb ccc cck ccl ccn cct ccv cka ckb ckc ckt cl- cla clb clc clk cll cln clt clv cn- cna cnb cnc cnl cnn cnt cnv cta ctb ctc ctk ctl ctn ctt ctv cva cvb cvc cvk cvl cvn cvt cvv k-t ka- kaa kab kac kak kal kan kat kav kba kbb kbc kbk kbl kbn kca kcb kcc kck kcl kcn kct kkb kkc kkk kkl kkn kkt kkv kl- kla klb klc klt klv kn- kna knc knk knl knn knt kta ktb ktc ktk ktl ktn ktt ktv kva kvb kvk kvn kvv la- laa lab lac lak lal lan lat lav lba lbb lbc lbk lbl lbt lbv lca lcb lcc lck lcl lcn lct lcv lka lkb lkl lkt lla llb llc llk lll lln llt llv lna lnb lnc lnk lnl lnn lnt lta ltb ltc ltk ltl ltt ltv lva lvb lvc lvl lvn lvt lvv naa nab nac nak nal nan nat nav nba nbb nbc nbk nbl nbn nbt nbv nca ncb ncc nck ncl ncn nct ncv nka nkc nkk nkn nkt nla nlb nlc nlk nll nln nlt nlv nna nnb nnc nnk nnl nnn nnt nnv nta ntb ntc ntk ntn ntt ntv nva nvb nvc nvk nvl nvn nvt nvv taa tab tac tak tal tan tat tav tba tbb tbc tbk tbl tbn tbt tbv tca tcb tcc tck tcl tcn tct tcv tka tkb tkc tkk tkl tkt tla tlc tlk tll tln tlt tlv tna tnb tnc tnk tnl tnn tnt tta ttb ttc ttk ttl ttn ttt ttv tva tvb tvc tvk tvl tvn tvt v-a vaa vab vac vak val van vat vav vba vbc vbk vbl vbv vca vcc vcl vcn vct vka vkb vkt vl- vla vlb vlc vlk vll vlt vlv vn- vna vnl vnv vta vtb vtc vtk vtl vtt vtv vva vvb vvc vvt vvv