a-a a-b aaa aab aaj aan aar aau ab- aba abb abj abn abr abu aja ajb ajj ajn ajr aju an- ana anb anj ann anr anu ar- ara arb arj arn arr aru au- aua aub auj aun aur b-u baa bab baj ban bar bau bba bbb bbn bbr bbu bja bjj bjn bjr bju bna bnb bnj bnn bnr bnu bra brb brj brn brr bru bua bub buj bun bur buu jaa jab jaj jan jar jau jba jbj jbr jbu jja jjb jjj jjr jju jna jnj jnn jnr jnu jra jrb jrn jrr jub jun jur naa nab naj nan nar nau nba nbb nbn nbr nbu nja njn nju nna nnb nnn nnu nra nrb nrj nrn nrr nru nua nub nuj nun nur nuu ra- raa rab raj ran rar rau rba rbb rbn rbr rbu rja rjr rna rnb rnn rnr rnu rra rrb rrn rrr rru rua rub run rur ruu ua- uaa uab uaj uan uar uau uba ubb ubn ubr ubu un- una unb unn unr unu ur- ura urb urn urr uru uua uun uur uuu