-al a-a a-b a-c a-t aaa aab aac aae aak aal aat aav ab- aba abb abc abe abk abl abt abv ac- aca acb acc ace ack acl act acv aea aeb aec aee aek ael aet aev aka akb akc ake akk akl akv al- ala alb alc ale alk all alt alv at- ata atb atc ate atl att atv av- ava avb avc ave avk avl avt baa bab bac bae bak bal bat bav bba bbb bbc bbe bbk bbl bbt bca bcb bcc bce bck bcl bct bcv be- bea beb bec bee bek bel bet bev bka bkb bkc bke bkk bkl bkt bkv bla blb blc ble blk bll blt blv bta btb btc bte btk btl btt btv bva bvb bvc bve bvk bvl bvt bvv c-- caa cab cac cae cak cal cat cav cba cbb cbc cbe cbk cbl cbt cbv cca ccb ccc cce cck ccl cct ccv ce- cea ceb cec cee cek cel cet cev cka ckb ckc ckt cl- cla clb clc cle clk cll clt clv cta ctb ctc cte ctk ctl ctt ctv cva cvb cvc cve cvk cvl cvt cvv eaa eab eac eae eak eal eat eav eba ebb ebc ebe ebk ebl ebt ebv ec- eca ecb ecc ece eck ecl ect ecv eea eeb eec eee eek eel eet eev eka ekb ekc eke ekl ekt ekv ela elb elc ele elk ell elt elv eta etb etc ete etk etl ett etv eva evb evc eve evl evt evv k-t ka- kaa kab kac kae kak kal kat kav kba kbb kbc kbe kbk kbl kca kcb kcc kce kck kcl kct ke- kea keb kec kee kek kel ket kev kkb kkc kke kkk kkl kkt kkv kl- kla klb klc klt klv kta ktb ktc kte ktk ktl ktt ktv kva kvb kvk kvv la- laa lab lac lae lak lal lat lav lba lbb lbc lbe lbk lbl lbt lbv lca lcb lcc lce lck lcl lct lcv lea leb lec lee lek lel let lev lka lkb lkl lkt lla llb llc lle llk lll llt llv lta ltb ltc lte ltk ltl ltt ltv lva lvb lvc lve lvl lvt lvv taa tab tac tae tak tal tat tav tba tbb tbc tbe tbk tbl tbt tbv tca tcb tcc tce tck tcl tct tcv te- tea teb tec tee tek tel tet tev tka tkb tkc tke tkk tkl tkt tla tlc tle tlk tll tlt tlv tta ttb ttc tte ttk ttl ttt ttv tva tvb tvc tve tvk tvl tvt v-a v-e vaa vab vac vae vak val vat vav vba vbc vbk vbl vbv vca vcc vce vcl vct vea veb vec vee vek vel vet vka vkb vkt vl- vla vlb vlc vle vlk vll vlt vlv vta vtb vtc vte vtk vtl vtt vtv vva vvb vvc vvt vvv