a-a a-b aaa aab aaf aar ab- aba abb abf abr af- afa afb aff afr ar- ara arb arf arr baa bab baf bar bba bbb bbf bbr bfa bfb bff bfr bra brb brf brr faa fab faf far fba fbb fbf fbr ffa fff ffr fra frb frf frr ra- raa rab raf rar rba rbb rbf rbr rfa rfb rff rfr rra rrb rrf rrr

aaaa aaab aaaf aaar aaba aabb aafa aafb aaff aara abaa abab abaf abar abb- abba abbb abbr abff abra afaa afar affa afr- afra arab araf arar arba arfa arfb arff arr- arra arrr baaa baaf baar baba babb babr baff bar- bara barb barf barr bbbb brab braf brrr faaa faba fafa faff fara farr fbar ffar ffff ffrr frab raab raaf raba rabb rafa raff rara rarb rarf rbaf rbbb rbbr rrrr

-aaa- aabaa aabba aabra abaab ababa abara abbar abfab abrar afara ar-ab arab- araba arara arbab arbar babar babra baffa bafra baraa barab barar barba barff barra braff brrar brrrr fabra farab farfa fraba ra-ra raaba raaff rabab rabba rafar raffa raraf

aaaaba araafa arbra arfara arfarf arraba baabaa baabar babbar barara barbar barbra bbbbbb fabara faraar farara farfar farrar frafra rababa

baabarr barabra barbara bbbbbbb farfara

bafarara bar-abba barabara bbbbbbbb

baabaabaa

aaaaaaaaaaaaaaa bbbbbbbbbbbbbbb