a-a a-b aaa aab aas aau ab- aba abb abs abu as- asa asb ass asu au- aua aub aus b-u baa bab bas bau bba bbb bbs bbu bsa bsb bss bsu bua bub bus buu saa sab sas sau sba sbb sbs sbu ss- ssa ssb sss ssu sua sub sus suu ua- uaa uab uas uau uba ubb ubs ubu usa usb uss usu uua uus uuu

aaaa aaab aaas aaba aabb aasa aass aasu aaus abaa abab abas abau abb- abba abbb abbs abs- absa abss abua abus asaa asab asas asau asba asbu assa asss assu asub asus auaa ausa ausu baaa baas baba babb babs babu basa bass basu bau- bbas bbau bbbb bbbs bsaa bsas buba bubb bubs bubu busa buss busu buus saab saas saba sabb sabs sabu sasa sass saua saus sbaa sbas sbbs sbsa sbus ssaa ssab ssas ssau sssa sssb ssss suas sub- suba subb subs sus- susa suss susu suus uasa uaua ubba us-a usaa usas usba usbs ussa ussb usss ussu usua usus uuuu

-aaa- aaaas aaasa aaass aabaa aabba abaab ababa ababs ababu abasa abass abbas asaba asasa assab assas asubs auass aubas aussa babas babau babbs babus basab bassa bassu bbuss bsaba bubas bubba busaa bussa bussu busua busuu s-bus saaba saabs saasa saasu sabas sabau sabsa sabus sassa sauba sssss suasa subba subbu subss susus usaas usuba uuuuu

aaaaba ababsa abassa abbasa abbass abubus abusua ausbbs baabaa bassus bbbbbb bubbas bububu sabbas ssabsa ubussu usausa ususau

aaasuss abusuas babassu bau-bau bbbbbbb sssssss subbass

abbassus babassus bbbbbbbb bu-ba-bu sub-bass

abbabubba baabaabaa usausausa

aaaaaaaaaaaaaaa bbbbbbbbbbbbbbb