-ana aaaa aaab aaaf aaan aaar aaav aaba aabb aafa aafb aaff aana aara aava abaa abab abaf aban abar abb- abba abbb abbr abff abra abva afaa afan afar affa afr- afra ana- anaa anab anan anar anba anbb anfa anna annb arab araf aran arar arba arfa arfb arff arna arr- arra arrr arva arvn avab avan avar avra avva baaa baaf baan baar baba babb babr baff bana bann banr bar- bara barb barf barn barr bava bbbb bbfn bnrr brab braf bran brav brna brrr faaa faan faba fafa faff fana fara farb farr fava fbar ffar ffff ffrr fnar fr-v frab fran naaa naab naan naar naba nabf nafa naff nan- nana nanb nann nara narf narn narr nava navr navv nbaa nbaf nbar nbfa nfaa nfff nfra nnnn nrab nrna nvfr raab raaf raan raba rabb rafa raff rana rann rara rarb rarf rava rbaf rbbb rbbr rnaf rnbr rrna rrrr vaan vaar vafa vana vann vara varf varn varr vava vnav vran vrav vrba vrnn vvvv