-vac a-be a-ha aaaa aaab aaac aaae aaah aaav aaba aabb aabc aabh aaca aacb aacc aace aach aacv aaea aaec aaev aaha aava abaa abab abac abae abb- abba abbb abbe abca abcb abcc abch abec abee abha abva acaa acab acac acae acba acca accc acce acch ace- acea acec aceh acev acha ache achh acvv aeac aecb aeva ahab ahac ahah ahha ahva avab avcc avce avea avec aveh avva baaa baah baba babb babe bac- baca bacc bace bach baha bava bave bbbb bbch bbeb bcaa bcbc bcca bccc bcec bche beah beav beba bebb bebe beca bech beeb bhca bhcc caaa caab caac caah caba cabe cac- caca cacc cace cach caec caha cahe cava cave cbac cbbc cbca cbcc cbce cbea cbec cbee cbha cbva cbvb cbve ccaa ccab ccac ccba ccbc ccca cccb cccc cccv ccee ccha cche ceac ceba cec- ceca cece ceeb ceec ceva chaa chab chac chae chah chav chca chce chch chea cheb chec chee cheh chev chha cvac cvca cvcc eaba eabh eaca eacc each eaec eave ebac ebba ebbc ebcc ecaa ecac ecbc ecbe ecca eccb eccc ecce echa eche eeca eeea eeee eeva ehaa ehav ehcc ehea eheh evac evae evah evea haab haba habe hace haec haha hava have hcbc hcca hccb hccc hcch heah hebb hebe heca hech heeb hehe heve hhaa hhhh hvac hvcc vaca vace vach vahe vava vbcc vche veba vecc vech veve vhhh vvvv