aaaa aaab aaad aaar aaas aaba aabb aabd aabt aada aads aadt aara aard aars aart aasa aasd aass aast aata aatt abaa abab abad abar abas abat abb- abba abbb abbr abbs abbt abda abra abrs abs- absa absd abss abta abts adaa adab adad adar adas adat adba adda addd addr adds adra adrs adsa adsr adss adst adta adts arab arad arar aras arat arba arbs arda ards arr- arra arrr arrs arrt ars- arsa arsd arst arta artr arts asaa asab asad asar asas asat asba asda asds asra asrs assa assd assr asss asst asta astb astr asts at-t ataa atab atad atar atas atat atbs atdt atra atsb atst atta attr atts baaa baad baar baas baat baba babb babr babs bada badb badd badr bads bar- bara barb bard barr bars bart basa bass bast bata bats batt bbad bbas bbbb bbbs bbdd bd-r bdsd brab brad bras brat brda brds brdt brrr brrs brsb brsr brst bsaa bsas bsat bsbd bsra bsrd bssd bsts btaa btdt btrt btss bttb daab daad daar daas daba dabb dabs dabt dada dads dara darb dard darr dars dart dasa dasb dasd dass dast data datr dats datt dbar dbas dbrs dbsa dbss dbtt dddd ddss ddts draa drab drad drar dras drat drba drda drra drrs drsa dsba dsda dsdr dsrr dssa dsst dsts dtaa dtss raab raad raas raat raba rabb rabs rada radd radr rads radt rara rarb rars rasa rasd rass rast rata rats ratt rbbb rbbr rbbs rbds rbsd rbss rbst rdas rrad rras rrat rrrr rsaa rsdd rsds rssa rsts rtas rtdt rtss rtts saab saad saar saas saat saba sabb sabr sabs sada sadb sadd sadr sads sadt sara sard sarr sars sart sasa sasd sass sast sata satb satd satr sats satt sbaa sbar sbas sbbs sbds sbsa sbsd sbst sdba sdds sdrs sdss sras srsd srta srtr ssaa ssab ssas ssat ssbr ssdd ssra ssrs sssa sssb ssss ssta sstb sstd ssts stab stad star stas stat stbd stbs stds stra strd strs stss sttd sttr taa- taar taas taat taba tabb tabs tada tads tara tarb tard tarr tars tart tasa tasb tasr tass tast tata tatb tatr tats tatt tbar tbas tbbs tbrb tbst tbta tddb tdra tdss traa trab trad tras trat trra trsd trst trtr tsaa tsar tsat tsbd tsdb tssa tssr tsst tsts ttab ttbb ttss tttt