-vac aaaa aaab aaac aaav aaba aabb aabc aaca aacb aacc aacu aacv aava abaa abab abac abag abau abb- abba abbb abca abcb abcc abua abug abva acaa acab acac acag acba acca accc accu acga acu- acvv agac agag agau agav agba agca agcc agga aggu agua agva auaa auca auga auug avab avcc avva baaa baba babb babu bac- baca bacc baga bagg bau- baug bava bavu bbau bbbb bbga bcaa bcbc bcbg bcca bccc bcuc bgca buba bubb bubu buca bucc bucu buga bugg caaa caab caac caba cabg cabu cac- caca cacc caga cagg cauc cava cavu cbac cbbc cbca cbcc cbcu cbga cbgb cbva cbvb cbvg ccaa ccab ccac ccag ccba ccbc ccca cccb cccc cccu cccv ccga ccgc ccuc cgac cgcc cgcg cuau cub- cuba cubb cuca cucc cuga cvac cvca cvcc gaba gabb gabu gaga gagg gagu gaua gaub gava gbag gc-c gcaa gcbc gccc gggg guaa guac guag guba gubb gubu guca guga gugb gugg gugu guva gvvv uabc uaca uaua ubac ubba ucav ucbc ucca ucua ugab ugcc ugcg uguu uuuu uv-a uv-b uv-c uvaa uvac uvvu vaca vag- vaga vagg vava vbcc vcug vgcc vuca vugg vvvv