a-ha aaaa aaab aaac aaah aaba aabb aabc aabh aaca aacb aacc aach aaco aagh aaha aaoo abaa abab abac abag abb- abba abbb abbo abca abcb abcc abch abha abho aboa abob aboh aboo acaa acab acac acag acba acca accc acch acco acga acha achh acho acoa acog acoh ag-o agac agag agao agba agbo agca agcc agco agga agha agob agog agoo ahab ahac ahah ahha ahoa ahog aoah aoba aoca baaa baah baba babb babo bac- baca bacc bach baco baga bagg bagh bago baha baho baoh bbbb bbch bbga bcaa bcbc bcbg bcca bccc bgca bhag bhao bhca bhcc bhog boab boac boag boba bobb bobo boca boch boco boga bogg bogh bogo boha boho boob booc boog booh c-bo caaa caab caac caah caba cabg cabo cac- caca cacc cach caco caga cagg cago caha cbac cbbc cbca cbcc cbga cbgb cbha ccaa ccab ccac ccag ccba ccbc ccca cccb cccc ccga ccgc ccha ccob ccoc cgac cgcc cgcg chaa chab chac chag chah chao chca chch chgb chha choc choh choo coag coba cobb cobh cobo coca coch coco cogh cogo coha coho coob cooh gaba gabb gabo gach gaga gagg gago gaha gaoh gbag gbbo gc-c gcaa gcbc gccc gcoa gggg gghg goba gobo goca goch goga gogh gogo goha gohb goog haab haag haba habo haco hag- haga hagg hagh hago haha haho hbag hboc hcbc hcca hccb hccc hcch hcgh hgah hggc hhaa hhgg hhhh hoac hoag hoba hobo hoca hoch hoga hogg hogh hogo hoha hoho obba obbo ocab ocac ocbc occa occc ocga ocha ogb ogba ogoa ogog ohba ohcc ohho ohob ohoh ooaa ooba ooha ooho oooh oooo