-vac a-be aaaa aaab aaac aaae aaav aaba aabb aabc aaca aacb aacc aace aaco aacv aaea aaec aaev aage aaoe aaoo aava abaa abab abac abae abag abb- abba abbb abbe abbo abca abcb abcc abec abee aboa abob aboo abov abva acaa acab acac acae acag acba acca accc acce acco ace- acea acec acev acga acoa acoe acog acvv aeac aecb aega aeva ag-o agac agag agao agav agba agbo agca agcc agce agco agea agee agga agge agob agog agoo agva aoba aoca aoce avab avao avcc avce avco avea avec aveo avgo avva avvo baaa baba babb babe babo bac- baca bacc bace baco baga bage bagg bago bava bave bbbb bbeb bbga bcaa bcbc bcbg bcca bccc bcec bcvo beag beav beba bebb bebe bebo beca beeb beeg bega begg bego beo- bevo bgca boab boac boag boba bobb bobe bobo boca boce boco boea boec boee boeo boga boge bogg bogo boob booc booe boog bova bove bovo c-bo caaa caab caac caba cabe cabg cabo cac- caca cacc cace caco caec caga cage cagg cago cava cave cavo cbac cbbc cbca cbcc cbce cbea cbec cbee cbga cbgb cbva cbvb cbve cbvg ccaa ccab ccac ccag ccba ccbc ccca cccb cccc cccv ccee ccga ccgc ccob ccoc ccvo ceac ceba cec- ceca cece ceco ceeb ceec cege cego ceva cevo cgac cgcc cgcg coag coba cobb cobe cobo coca coce coco cogo coob cova cove covo cvac cvca cvcc eaba eaca eacc eaec eaga eage eave ebac ebba ebbc ebbo ebcc eboe eboo ecaa ecac ecao ecbc ecbe ecca eccb eccc ecce ecco eco- ecog eeca eeea eeee eega eeoc eeva egaa egae egao egba egbe egcc egcg egea egec egee eggb egge eggo ego- egov evac evae evea evga evoe evoo gaba gabb gabe gabo gace gaea gaec gaga gage gagg gago gava gave gbag gbbo gc-c gcaa gcbc gccc gcoa gcov geab geba gebe geca gece gege gegg gego geo- geog geva geve gevo gggg goba gobe gobo goca goce goga gogo goog gove gvvv o-eo obba obbo obea obec oboe ocab ocac ocbc occa occc oce ocee ocga oec- oeca oecc oeec oegb ogae ogb ogba ogbe ogea ogee ogge ogoa ogog ooaa ooba oobe oooo ovee ovo- ovoo vaca vace vaco vag- vaga vage vagg vava vbcc veba vecc vega vege veve vevo vgcc voca voce voga voge vooc voog vvob vvog vvvv