-al -ol a-a a-b a-c a-t aaa aab aac aal aao aat aau aav ab- aba abb abc abl abo abt abu abv ac- aca acb acc acl aco act acu acv al- ala alb alc all alo alt alu alv aoa aob aoc aol aoo aot aou aov at- ata atb atc atl ato att atu atv au- aua aub auc aul auo aut auv av- ava avb avc avl avo avt avu b-u baa bab bac bal bao bat bau bav bba bbb bbc bbl bbo bbt bbu bca bcb bcc bcl bco bct bcu bcv bla blb blc bll blo blt blu blv boa bob boc bol boo bot bou bov bta btb btc btl bto btt btu btv bua bub buc bul buo but buu bva bvb bvc bvl bvo bvt bvu bvv c-- caa cab cac cal cao cat cau cav cba cbb cbc cbl cbo cbt cbu cbv cca ccb ccc ccl cco cct ccu ccv cl- cla clb clc cll clo clt clu clv co- coa cob coc col coo cot cou cov cta ctb ctc ctl cto ctt ctu ctv cua cub cuc cul cuo cut cuu cuv cva cvb cvc cvl cvo cvt cvu cvv la- laa lab lac lal lao lat lau lav lba lbb lbc lbl lbo lbt lbu lbv lca lcb lcc lcl lco lct lcu lcv lla llb llc lll llo llt llu llv loa lob loc lol loo lot lou lov lta ltb ltc ltl lto ltt ltu ltv lua lub luc lul luo lut luu luv lva lvb lvc lvl lvt lvv oaa oab oac oal oao oat oau oav ob- oba obb obc obl obo obt obu obv oc- oca ocb occ ocl oco oct ocu ocv ola olb olc oll olo olt olu oo- ooa oob ooc ool ooo oot oov ot- ota otb otc otl oto ott otu otv ou- oua ouc oul ouo out ov- ova ovb ovc ovl ovo ovv taa tab tac tal tao tat tau tav tba tbb tbc tbl tbo tbt tbu tbv tca tcb tcc tcl tco tct tcu tcv tla tlc tll tlo tlt tlu tlv to- toa tob toc tol too tot tou tov tta ttb ttc ttl tto ttt ttu ttv tua tub tuc tul tuo tut tuu tuv tva tvb tvc tvl tvo tvt tvu ua- uaa uab uac ual uao uat uau uav uba ubb ubc ubl ubo ubt ubu ubv uca ucb ucc ucl uco uct ucu ucv ula ulb ulc ull ulo ult ulu ulv uoa uob uoc uol uoo uot uta utb utc utl uto utt utu utv uua uuc uut uuu uva uvb uvc uvl uvo uvu uvv v-a vaa vab vac val vao vat vau vav vba vbc vbl vbo vbv vca vcc vcl vco vct vcu vl- vla vlb vlc vll vlo vlt vlv voa vob voc vol voo vot vou vov vta vtb vtc vtl vto vtt vtu vtv vul vut vuv vva vvb vvc vvo vvt vvv