a-a a-b aaa aab aar aau ab- aba abb abr abu ar- ara arb arr aru au- aua aub aur b-u baa bab bar bau bba bbb bbr bbu bra brb brr bru bua bub bur buu ra- raa rab rar rau rba rbb rbr rbu rra rrb rrr rru rua rub rur ruu ua- uaa uab uar uau uba ubb ubr ubu ur- ura urb urr uru uua uur uuu

aaaa aaab aaar aaba aabb aara aaru abaa abab abar abau abb- abba abbb abbr abra abua arab arar arau arba arr- arra arrr arru arua arub auaa aur- aura baaa baar baba babb babr babu bar- bara barb barr bau- baur bbau bbbb brab brau brrr buar buba bubb bubu bur- bura burb burr buru raab raba rabb rabu rara rarb raua raub rbbb rbbr rrrr ruba rubb rubu rura ruru uaru uaua ubar ubba ubra urau urba urra urur uuuu

-aaa- aabaa aabba aabra aarau abaab ababa ababu abara abaru abbar abbur abrar abura aburr ar-ab arab- araba arara araru arbab arbar arrau arrua aruaa aruba arura aruru aurar aurra babar babau babra babur baraa barab barar barba barbu barra barru barua baura bauru brrar brrrr bubba buraa burra burru ra-ra raaba rabab rabba rubab rubba rubra uraba urbar urubu uuuuu

aaaaba abburu araua araura arbra arraba aruaru baabaa baabar baarbu babbar babrru babura barara barbar barbra baruar baurua bbbbbb braura brubru bububu burbur raabau rababa rubarb rubbra uruara

baabarr barabra barbara bau-bau bbbbbbb burarra buruuba

bar-abba barabara bbbbbbbb bruara bu-ba-bu buruburu rubarabr

abbabubba baabaabaa

aaaaaaaaaaaaaaa bbbbbbbbbbbbbbb