-al -ol a-a a-b a-c a-t aaa aab aac aal aao aat aau ab- aba abb abc abl abo abt abu ac- aca acb acc acl aco act acu al- ala alb alc all alo alt alu aoa aob aoc aol aoo aot aou at- ata atb atc atl ato att atu au- aua aub auc aul auo aut b-u baa bab bac bal bao bat bau bba bbb bbc bbl bbo bbt bbu bca bcb bcc bcl bco bct bcu bla blb blc bll blo blt blu boa bob boc bol boo bot bou bta btb btc btl bto btt btu bua bub buc bul buo but buu c-- caa cab cac cal cao cat cau cba cbb cbc cbl cbo cbt cbu cca ccb ccc ccl cco cct ccu cl- cla clb clc cll clo clt clu co- coa cob coc col coo cot cou cta ctb ctc ctl cto ctt ctu cua cub cuc cul cuo cut cuu la- laa lab lac lal lao lat lau lba lbb lbc lbl lbo lbt lbu lca lcb lcc lcl lco lct lcu lla llb llc lll llo llt llu loa lob loc lol loo lot lou lta ltb ltc ltl lto ltt ltu lua lub luc lul luo lut luu oaa oab oac oal oao oat oau ob- oba obb obc obl obo obt obu oc- oca ocb occ ocl oco oct ocu ola olb olc oll olo olt olu oo- ooa oob ooc ool ooo oot ot- ota otb otc otl oto ott otu ou- oua ouc oul ouo out taa tab tac tal tao tat tau tba tbb tbc tbl tbo tbt tbu tca tcb tcc tcl tco tct tcu tla tlc tll tlo tlt tlu to- toa tob toc tol too tot tou tta ttb ttc ttl tto ttt ttu tua tub tuc tul tuo tut tuu ua- uaa uab uac ual uao uat uau uba ubb ubc ubl ubo ubt ubu uca ucb ucc ucl uco uct ucu ula ulb ulc ull ulo ult ulu uoa uob uoc uol uoo uot uta utb utc utl uto utt utu uua uuc uut uuu

aaaa aaab aaac aaal aaba aabb aabc aabl aabt aaca aacb aacc aacl aaco aact aacu aala aalc aall aalo aalu aaoo aata aatc aatt abaa abab abac abal abat abau abb- abba abbb abbo abbt abca abcb abcc abcl abct abla ablo aboa abob abol aboo abot abou abta abtu abua abul abut ac-t acaa acab acac acat acba acbl acca accc acco acct accu acla aclc aclu acoa acol acot acou acta actc actl acto actt actu acu- acul acuo acut alaa alac alal alao alat alau alb- alba albc albo albu alca alcc alco all- alla alll allo allu aloa aloc alol aloo alot alou alta alto alua alut aoba aoca aola aotc aoul aout at-l at-t ataa atab atac atal atat atca atcc atcl atco atla atlo atob atoc atol atot atta atto attu atua atub atuc atul auaa auca auct aul- aula aull aulo ault aulu auol aut- auto baaa baal baat baba babb babo babu bac- baca bacc baco bact bala balc ball balo balt balu baol bata batc bato batt batu bau- baul bbau bbbb bblb bcaa bcat bcbc bcca bccc bccl bctc bcuc blaa blab blac blat blau blbt blcu blob bloc bloo blot blou blub blut boab boac boal boat boba bobb bobo bobu boca boco bocu bola boll bolo bolt bolu boob booc bool boot bota botb boto bott boua boul bout btaa btcc btcl btla btob bttb bual buat buba bubb bubo bubu buca bucc buco bucu bula bulb bull bult bulu buol but- buta buto butt c-bo caaa caab caac caal caat caba cabo cabu cac- caca cacc caco cala calc call calo calt calu caol cat- cata catb catc cato catt catu cauc caul cauo caut cbac cbal cbat cbbc cbca cbcc cbcl cbct cbcu cblb cblc cbol cbot cbta cbtc cbtl ccaa ccab ccac ccat ccba ccbc ccca cccb cccc cccl cccu ccla cclc ccob ccoc cctb cctc cctl cctt ccuc ccut clab clat clau clob cloo clot clou cltb cltc club clut coal coat coba cobb cobo cobu coca coco coct cocu col- cola colb coll colo colt colu coob cool coot cota cotb cotc coto cott cotu coua coub coul cout ctab ctal ctba ctca ctol ctot ctta cuau cub- cuba cubb cuca cucc cula culb culc cull culo cult cut- cuta cutc cuto cutt laaa laac laal laat laba labo labu laca lacc lacl laco lact lacu lala lall lalo lalu laou lata latc lato latt latu laub laul laut lbcc lcac lcat lcbc lcca lccc lctl lcto llao llat llcc lllc llll lloa lloc lloo loac loat lob- loba lobb lobo loca locc loco locu lola loll lolo loob looc lool loot lota lotl loto lott loul lout louu ltac ltbl ltcc lttc ltuc luau luba luca lula lull lulu luta luua oaau oall obal obba obbo obla oblu obol obot ocab ocac ocal ocat ocbc occa occc occt oclc oct- octa octo ocul olac olat olba olbo olca olcc olla ollo olot olta oltu ooaa ooba oola oolo oooo ootb otac otcl oto- otoo otta otto ottu ouac ouat oucc oula oulu out- outa outb outo ouu- taa- taal taat taba tabb tabc tabl tabo tabu taca tacc tacl taco tact tala talc tall talo talu taoa taou tata tatb tato tatt tatu taua taub tauc taul taut tbca tbcb tbcc tbta tcca tccc tccu tctc tcul tlac tlco toab toal toat toau toba tobo tobt tobu toca toco tol- tola toll tolo tolt tolu tooa tool toot tota totc toto tott toul tout ttab ttbb tttt ttul tual tuao tuat tuba tubb tubo tubu tuca tucc tuco tula tull tulo tulu tuta tutl tuto tutt tutu tuuo uabc uaca uaoc uata uatu uaua ubac ubal ubba ubbo ubla ublo uboc ucal ucat ucbc ucca ucla ucua ucut ulaa ulbc ulcc ulco ulla ullo