-aaa- -abad a-dna aaadc aabaa aabba aacbc aadac abaab ababa abaca aback abada abaka abana abanc aband abank abann abbac abbad abban abcan abccc abcdb abdan abnak acaca acacb acack acana accad adaba adada adaka adana adanc adkan adnan akaba akana akand akban akkad anaba anack anaka anana anand anban andab andac andad andan ankaa annan b-dna babak baban babka bacab bacca back- backa backn badak badan badna bakan bakka banak banan banba banca banck banda bandb bandn banka banna bckdk c-a-c c-dna c-kad ca-ca caaan caaba caban cacak cadac canan canda canna ccand ccccc cdand cnnnn d-a-d daada daana daban dabba dacca dacka dadda dadna dakan dakka danak danan danda dandd danka danna dback dccab ddddd k-b-d kaaba kabaa kabab kabad kabak kaban kabba kadan kakan kakka kanab kanad kanak kanda kandk kanka kanna kbank kcand knack naaak naban nabba nacaa nacac nacba naccc nacda nacka nacna nadab nadak nadan nakba nanak nanan nanda nanka nann- nanna ndana nkana