a-a a-b a-t aaa aab aar aat aax ab- aba abb abr abt abx ar- ara arb arr art arx at- ata atb atr att atx ax- axa axr axt axx baa bab bar bat bax bba bbb bbr bbt bbx bra brb brr brt brx bta btb btr btt btx bxb bxx ra- raa rab rar rat rax rba rbb rbr rbt rbx rra rrb rrr rrt rta rtb rtr rtt rtx rxr t-x taa tab tar tat tax tba tbb tbr tbt tra trb trr trt trx tta ttb ttr ttt ttx txt xaa xar xat xbr xbx xrt xrx xtr xtx xxx

aaaa aaab aaar aaba aabb aabt aara aart aata aatt abaa abab abar abat abax abb- abba abbb abbr abbt abra abta arab arar arat arax arba arr- arra arrr arrt arta artr artx at-t at-x ataa atab atar atat atax atra atrx atta attr axar axat ba-x baaa baar baat baba babb babr bar- bara barb barr bart barx bata batt baxt bbbb brab brat brax brrr btaa btrt bttb raab raat raba rabb rara rarb rata ratt raxa rbbb rbbr rrat rrrr taa- taar taat taba tabb tara tarb tarr tart tata tatb tatr tatt tax- taxa taxt tbar tbrb tbta traa trab trat trax trra trtr ttab ttbb tttt txaa txtr xaar xara xbar xbra xtar xtra xxxx

-aaa- aaata aabaa aabba aabra abaab ababa abara abbar abbat abrar abtaa abtar ar-ab araat arab- araba arara arata araxa arbab arbar arbat art-x artar artat artax atara ataxx atbar atbat atrab atrax attar attra baart baata babar babax babra bar-x baraa barab barar barat barba barra barta batab batar batat batra batta bbart braat bratt brrar brrrr btr-t ra-ra raaba rabab rabat rabba rabta ratba ratra ratta raxar rxart t-ara t-bar ta-ra ta-ta taart tabar tabat tabra tarar tarat tarax tarra tarta tartt tataa tatar tatra tatta tbtbt traba trata tratt traxx ttttt x-bar xatar xatax xbxrx

aaaaba abarat abarta abatar ararat aratta arbra arraba artaxa at-bat ataaba atarax atarba atarra atbara atrata baabaa baabar baatar babbar baraat barara barata barbar barbat barbra barrat barrax bartab bartra batara batata bbbbbb raabta rababa rabbat ratata ratbat rattar rattat t-barb taarab tabara tabata tabbat taraba tarara tarata tarrar tartar tartr- tataat tatara tattat tra-ra xarxar

arabata arbatax attatba baabarr babbart barabra barbara barbata barratt barrtab batabat bbbbbbb rat-tat ratatat tabarra tat-tat xxxxxxx

artaxata bar-abba barabara batatara bbbbbbbb brattata ra-ta-ta taratata

artaxarta baabaabaa battabara rat-a-tat

ratatattat

rat-tat-tat tat-tat-tat

tatararatata tattarrattat xxxxxxxxxxxx

rat-a-tat-tat

aaaaaaaaaaaaaaa bbbbbbbbbbbbbbb