a-be aaaa aaab aaae aaam aaba aabb aabm aabt aaea aaem aama aamb aame aata aatt abaa abab abae abam abat abax abb- abba abbb abbe abbt abee abet abma abmb abmt abta aemt aeta aett aetx amaa amae amam amat amax amb- amba ambe ambx amee amet amex amm- amma amme amta amte at-t at-x ataa atab atae atat atax atea atee atem atex atm- atma atme atta atte axat ba-x baaa baam baat baba babb babe babm bama bamb bame bamm bata bate batt baxt bbbb bbeb bbet beam beat beba bebb bebe beeb beem beet bema beme beta bete bett bmaa btaa btex bttb eaba eama eame eata eate ebam ebba eeea eeee eeta eete eext emae emam emax emba embe emet emex emma emme emta emte etam etat etee etem etta ette exa- exam exta exte maaa maam maat maba mabe maee maem mama mame mata mate matt maxx mbam mbba mbta meat mebe meem meet mema meme memx met- meta mete mett mexx mmaa mmab mmea mmmm mmxx mtaa mtab taa- taat taba tabb tabe taem tama tame tamm tata tatb tate tatt tax- taxa taxe taxm taxt tbta team teat teba teem teet tema teme teta tete tett tetx texa text tmaa tmax tmtt ttab ttbb ttma tttt txaa xate xbee xema xeme xexe xmax xtea xxxx