a-be a-ha aaaa aaab aaac aaae aaah aaba aabb aabc aabh aaca aacb aacc aace aach aaea aaec aaha aahz abaa abab abac abae abb- abba abbb abbe abca abcb abcc abch abec abee abez abha abza acaa acab acac acae acba acca accc acce acch ace- acea acec aceh acha ache achh aeac aecb ahab ahac ahah ahaz ahha aza- azab azaz azca azza baaa baah baaz baba babb babe bac- baca bacc bace bach bacz baez baha baza baze bbbb bbch bbeb bcaa bcbc bcca bccc bcec bche beah beba bebb bebe beca bech beeb beze bhca bhcc bzzz caaa caab caac caah caba cabe cac- caca cacc cace cach caec caha cahe caza caze cazh cbac cbbc cbca cbcc cbce cbea cbec cbee cbha ccaa ccab ccac ccba ccbc ccca cccb cccc ccee ccha cche ceac ceba cec- ceca cece ceeb ceec ceza ceze chaa chab chac chae chah chaz chca chce chch chea cheb chec chee cheh chez chha eaba eabh eaca eacc each eaec ebac ebba ebbc ebcc ecaa ecac ecbc ecbe ecca eccb eccc ecce echa eche eeca eeea eeee eeze ehaa ehcc ehea eheh ezha haab haba habe hace haec haha haza haze hcbc hcca hccb hccc hcch heah hebb hebe heca hech heeb hehe heze hhaa hhhh zaba zaca zach zaha zaza zeae zeba zebe zeca zech zeze zhee zzhz zzzz