a-be a-ha aaaa aaab aaad aaae aaah aaba aabb aabd aabh aada aade aaea aaha abaa abab abad abae abb- abba abbb abbe abda abed abee abha adaa adab adad adae adah adba adda addd adde adea adeb adee adeh adha adhd aede ahab ahad ahah ahed ahha baaa baad baah baba babb babe bada badb badd bade badh baed baha bbad bbbb bbdd bbeb bddh bead beah beba bebb bebe beda bede beeb beed daab daad daae daba dabb dada dade daeb daha dahe dddd dead deae deba debe deda dedd dede deeb deed deha dhaa dhad dhed dhee eaba eabh eada eadb eadd ebba ebed edad edah edda edde ede- edea edeh eede eeea eeee ehaa ehdd ehea eheh haab haad haba habe hada hade hadh haed haha hdda head heah hebb hebe heda hedd hede heeb heed hehe hhaa hhhh