a-a a-b aaa aab aar aas ab- aba abb abr abs ar- ara arb arr ars as- asa asb asr ass baa bab bar bas bba bbb bbr bbs bra brb brr brs bsa bsb bsr bss ra- raa rab rar ras rba rbb rbr rbs rra rrb rrr rrs rsa rsb rsr rss saa sab sar sas sba sbb sbr sbs sr- sra srb srr srs ss- ssa ssb ssr sss

aaaa aaab aaar aaas aaba aabb aara aars aasa aass abaa abab abar abas abb- abba abbb abbr abbs abra abrs abs- absa abss arab arar aras arba arbs arr- arra arrr arrs ars- arsa asaa asab asar asas asba asra asrs assa assr asss baaa baar baas baba babb babr babs bar- bara barb barr basa bass bbas bbbb bbbs brab bras brrr brrs brsb brsr bsaa bsas bsra raab raas raba rabb rabs rara rarb rars rasa rass rbbb rbbr rbbs rbss rras rrrr rsaa rssa saab saar saas saba sabb sabr sabs sara sarr sars sasa sass sbaa sbar sbas sbbs sbsa sras ssaa ssab ssas ssbr ssra ssrs sssa sssb ssss

-aaa- aaaas aaasa aaass aabaa aabba aabra aasra abaab ababa ababs abara abasa abass abbar abbas abbrs abrar abras absar ar-ab arab- araba arabs arara arars arass arbab arbar arbas arras asaba asara asasa asrar assab assas baars babar babas babbs babra baraa barab barar baras barba barbs barra barrs barsa barss basab basar basra bassa braas brasa brass brrar brrrr bsaba ra-ra raaba raasa rabab rabas rabba rasar rasas rasra rassa sa-ra saaba saabs saara saasa sabar sabas sabra sabsa saraa sarab saras sarra sarsa sassa srb-a sssrb sssss

aaaaba aaraas ababsa abasar abassa abbasa abbass arabas araras arbra arraba assara baabaa baabar babars babbar barara barbar barbas barbra barras barsar basara bassar bassra bbbbbb brasar rababa rababs rabasa sabara sabbas sabras saraba sarara sarasa sarasb sarbas sarras sarsar sarsas ssabsa ssbars

abarsas ar-rass baabarr barabas barabra barbara barrass basarab bbbbbbb sarabas sarba sarrara sssssss

assarara bar-abba barabara barabbas barbaras barrabas basaraba bass-bar bbbbbbbb sasarara sbarbara

baabaabaa barsabbas brassbars sassarara

aaaaaaaaaaaaaaa bbbbbbbbbbbbbbb