a-be a-ii aaaa aaab aaad aaae aaai aaba aabb aabd aabi aada aade aadi aaea aaib aaii abaa abab abad abae abai abb- abba abbb abbe abbi abda abdi abed abee abia abib abid abie adaa adab adad adae adai adba adbi adda addd adde addi adea adeb adee adia adib adie aebi aede aiai aiba aida aidb aide aidi aiea aiee aiia aiib aiid ba-i baaa baad baba babb babe babi bada badb badd bade badi baed baia baib baid baie bbad bbbb bbdd bbeb bdii bead beba bebb bebe bebi beda bede bedi beeb beed beia biad biba bibb bibe bibi bida bide bidi bieb bied daab daad daae daba dabb dada dade dadi daeb daia daid daie dddd ddie dead deae deba debe debi deda dedd dede dedi deeb deed deid deie dia- diab diad diba dibb dibe dida dide didi diea dieb died diii eaba eada eadb eadd eadi ebba ebed ebid edad edda edde eddi ede- edea edei edia edie eede eeea eeee eid- eide eidi eied eiei i-be iaaa iaai iaba iadb iaea iaia ibad ibea ibed ibia ibid ibie idad idae idbe idda idea ided idee idia idid idie ieie iida iide iied iiie iiii