a-a a-b a-q aaa aab aan aaq aar aau ab- aba abb abn abq abr abu an- ana anb ann anq anr anu aqa aqn aqr ar- ara arb arn arq arr aru au- aua aub aun aur b-u baa bab ban baq bar bau bba bbb bbn bbq bbr bbu bna bnb bnn bnr bnu bra brb brn brq brr bru bua bub bun bur buu naa nab nan nar nau nba nbb nbn nbr nbu nna nnb nnn nnu nra nrb nrn nrr nru nua nub nun nuq nur nuu qaa qan qar qau qba qbq qnb qqq qqu qra qrb qru qu- qua qur ra- raa rab ran raq rar rau rba rbb rbn rbr rbu rna rnb rnn rnr rnu rqn rra rrb rrn rrq rrr rru rua rub run rur ruu ua- uaa uab uan uaq uar uau uba ubb ubn ubr ubu un- una unb unn unq unr unu ur- ura urb urn urr uru uua uun uur uuu