a-a a-b a-q aaa aab aaf aan aaq aau ab- aba abb abf abn abq abu af- afa afb aff afn afq afu an- ana anb anf ann anq anu aqa aqf aqn au- aua aub auf aun b-u baa bab baf ban baq bau bba bbb bbf bbn bbq bbu bfa bfb bff bfn bfq bfu bna bnb bnf bnn bnu bua bub buf bun buu faa fab faf fan faq fau fba fbb fbf fbn fbu ffa fff ffn ffu fna fnb fnf fnn fnu fua fub fuf fun fuu naa nab naf nan nau nba nbb nbf nbn nbu nfa nfb nff nfn nfu nna nnb nnf nnn nnu nua nub nun nuq nuu qaa qaf qan qau qba qbq qfa qfb qff qnb qqq qqu qu- qua ua- uaa uab uaf uan uaq uau uba ubb ubf ubn ubu ufa uff ufn ufu un- una unb unf unn unq unu uua uun uuu