aaaa aaab aaac aaar aaba aabb aabc aabt aaca aacb aacc aacr aact aacu aara aarc aart aaru aata aatc aatt abaa abab abac abag abar abat abau abb- abba abbb abbr abbt abca abcb abcc abcr abct abra abrc abta abtu abua abug abut ac-t acaa acab acac acag acar acat acba acca accc acct accu acga acgr acr- acra acrc acrr acta actc actg actt actu acu- acur acut agac agag agar agat agau agba agca agcc agct agga aggu agra agta agtr agua agur agut arab arac arag arar arat arau arba arc- arca arct arga argb arr- arra arrc arrg arrr arrt arru arta artc artr arua arub arug arut at-t ataa atab atac atar atat atca atcc atcr atra atrc atru atta attr attu atua atub atuc atug atur auaa auca auct auga aur- aura aut- auug baaa baar baat baba babb babr babu bac- baca bacc bact baga bagg bagt bar- bara barb barc barg barr bart baru bata batc batt batu bau- baug baur bbau bbbb bbga bbrc bbrg bcaa bcar bcat bcbc bcbg bcca bccc bcra bcru bctc bcuc bgca brab brac brag brat brau brca brcb brrr brtc bruc brug brut btaa btcc btrc btrt bttb buar buat buba bubb bubu buca bucc bucu buga bugg bur- bura burb burg burr burt buru but- buta butt caaa caab caac caat caba cabg cabu cac- caca cacc cacr caga cagg cagr cara carb carc carr cart cat- cata catb catc catt catu cauc caut cbac cbar cbat cbbc cbca cbcc cbcr cbct cbcu cbga cbgb cbrt cbta cbtc ccaa ccab ccac ccag ccar ccat ccba ccbc ccca cccb cccc cccu ccga ccgc ccgt ccra ccrc ccrg ccrt cctb cctc cctt ccuc ccut cgac cgcc cgcg cgtu crab crac crag crar crat crau crbc crbu crca crcc crcr crrt crtc crub crug crut ctab ctag ctba ctca ctgu ctrc ctta cuau cub- cuba cubb cuca cucc cuga cura curb curr curt cut- cuta cutc cutt gaar gaba gabb gabr gabt gabu gaga gagg gagu gara garb garg garr gart gata gatc gatr gatt gaua gaub gaur gaut gbag gc-c gcaa gcat gcbc gccc gcrg gctc ggbt gggg grab grac grat grau grbr grcc grrr grtc grua grub grug grur grut gtaa gtbr gtcr gtta guaa guac guag guar guat guba gubb gubu guca guga gugb gugg gugu gura gurb gurg gurr gurt guru guta gutt gutu raab raag raat raba rabb rabu rac- raca racc ract racu raga ragg ragu rara rarb rata ratt ratu raua raub rauc raut rbbb rbbr rcac rcbc rccb rccc rcga rcgc rcrg rctc rctg rgba rgtr rrat rrrr rtca rtcc rtcg ruag ruba rubb rubu ruca ruct ruga rugg rura rurc ruru ruta rutt rutu taa- taag taar taat taba tabb tabc tabu taca tacc tact taga tagg tagu tara tarb tarc targ tarr tart taru tata tatb tatr tatt tatu taua taub tauc taur taut tbar tbca tbcb tbcc tbrb tbta tcca tccc tccu tcga tctc tgcc tgtc traa trab trac trag trat trau trca trcc trra trtc trtr trub truc trug trut truu ttab ttbb tttt tuar tuat tuba tubb tubr tubu tuca tucc tuga tugg tugu tura turb turc turg turr turt turu tuta tutt tutu uabc uaca uarc uart uaru uata uatu uaua ubac ubar ubba ubra ucar ucat ucbc ucca ucrc ucua ucut ugab ugar ugcc ugcg uggt ugra ugta ugur uguu urac urat urau urba urca urga urgu urra urur urut utac utau uttu utug uuta uuuu