a-be a-do aaaa aaab aaad aaae aaba aabb aabd aada aade aaea aaoe aaoo abaa abab abad abae abb- abba abbb abbe abbo abda abdo abed abee abez aboa abob abod aboo abza adaa adab adad adae adao adba adda addd adde addo adea adeb adee adeo adob adod adoe adoo adze aede aoba aza- azab azad azaz azed azo- azoo azza azzo baaa baad baaz baba babb babe babo bada badb badd bade bado baed baez baza baze bazo bbad bbbb bbdd bbdo bbeb bead beba bebb bebe bebo beda bede bedo beeb beed beo- beod bezd beze boab boad boaz boba bobb bobe bobo boda bodb bode bodo boea boee boeo boob bood booe booz boza bozo bzoe bzzz d-bo daab daad daae daba dabb dabo dada dade dado daeb daze dazz dddd dead deae deba debe deda dedd dede dedo deeb deed deza deze doab doae doba dobb dobe dod- doda dodd dode dodo doea doob dood doza doze dozo dzbb dzze eaba eada eadb eadd ebba ebbo ebed eboe eboo edad edda edde eddo ede- edea edod eede eeea eeee eeze eode ezed ezod ezzo o-eo oade oaze obad obba obbo obea obed oboe odbo odda oddd odea oded odeo odoo oedo ooaa ooba oobe ooda oooo ooze ozd ozee zaba zabo zada zaza zeae zeba zebe zedd zede zedo zeze zobo zoda zodd zoea zoo- zoza zozo zzzz