-ana aaaa aaab aaad aaan aaap aaba aabb aabd aabp aada aana aand aanp aapa abaa abab abad aban abap abb- abba abbb abda abpa abpd abpn abpp adaa adab adad adan adap adba adda addd addn adna adnp adp- ana- anaa anab anad anan anap anba anbb and- anda anna annb anp- anpa anpp apan apap apba apda apdd apna appa appd baaa baad baan baba babb bada badb badd bana band bann banp bapa bapp bbad bbbb bbdd bdna bnpp bpda d-na daab daad daan daap daba dabb dabp dada dana dand dann dapa dapp dbpd dddd dnaa dnab dnad dnan dnap dpaa dppa naaa naab naad naan naba nada nadp nan- nana nanb nand nann nanp napa napb napp nbaa nbad nbap nbpa nbpp ndaa nddb ndna ndnp ndpd nndb nnnn npap npda nppa nppd paan paap paba pada padd pan- pana pand pann papa papb papp pban pbpa pdpa pdpn pnpp ppad ppan ppap pppa pppd pppn pppp