aaaa aaab aaac aaba aabb aabc aabt aaca aacb aacc aaco aact aacu aaoo aata aatc aatt abaa abab abac abat abau abb- abba abbb abbo abbt abca abcb abcc abct aboa abob aboo abot abou abta abtu abua abut abza abzu ac-t acaa acab acac acat acba acca accc acco acct accu acoa acot acou acta actc acto actt actu acu- acuo acut aoba aoca aotc aout at-t ataa atab atac atat atca atcc atco atob atoc atot atoz atta atto attu atua atub atuc auaa auca auct aut- auto aza- azab azat azaz azca azo- azoo azot azua azza azzo baaa baat baaz baba babb babo babu bac- baca bacc baco bact bacz bata batc bato batt batu batz bau- baza bazo bbau bbbb bcaa bcat bcbc bcca bccc bcoz bctc bcuc boab boac boat boaz boba bobb bobo bobu boca boco bocu boob booc boot booz bota botb boto bott boua bout boza bozo btaa btcc btob bttb buat buba bubb bubo bubu buca bucc buco bucu bucz but- buta buto butt butz buuz buza buzz bzou bzzt bzzz c-bo caaa caab caac caat caba cabo cabu cac- caca cacc caco caoz cat- cata catb catc cato catt catu catz cauc cauo caut caza cazo cbac cbat cbbc cbca cbcc cbct cbcu cbot cbta cbtc ccaa ccab ccac ccat ccba ccbc ccca cccb cccc cccu ccob ccoc cctb cctc cctt ccuc ccut coat coba cobb cobo cobu coca coco coct cocu coob coot cota cotb cotc coto cott cotu coua coub cout cozz ctab ctba ctca ctot ctta cuau cub- cuba cubb cuca cucc cut- cuta cutc cuto cutt cuzo oaau obba obbo obot ocab ocac ocat ocbc occa occc occt oct- octa octo ooaa ooba oooo ootb otac oto- otoo otta otto ottu ouac ouat oucc out- outa outb outo ouu- ouza ouzo taa- taat taba tabb tabc tabo tabu taca tacc taco tact taoa taou tata tatb tato tatt tatu tatz taua taub tauc taut taza tazo tazz tbca tbcb tbcc tbta tcca tccc tccu tctc toab toat toau toba tobo tobt tobu toca toco tooa toot tota totc toto tott tout toza tozo ttab ttbb tttt tuao tuat tuba tubb tubo tubu tuca tucc tuco tuta tuto tutt tutu tuuo tuza tuzu tuzz tzut tzzt uabc uaca uaoc uata uatu uaua ubac ubba ubbo uboc ucat ucbc ucca ucoz ucua ucut uocc utac utau utto uttu uuoc uuta uuuu zaat zaba zabo zabu zaca zaza zazu zcta zctu zoat zobo zoco zoo- zoot zota zott zotz zouc zoza zozo zozu ztoa zubo zubu zuoz zuta zuzu zzzz