-er a-a a-b aaa aab aae aaj aan aar aau ab- aba abb abe abj abn abr abu aea aeb aee aej aen aer aeu aja ajb aje ajj ajn ajr aju an- ana anb ane anj ann anr anu ar- ara arb are arj arn arr aru au- aua aub aue auj aun aur b-u baa bab bae baj ban bar bau bba bbb bbe bbn bbr bbu be- bea beb bee ben ber beu bja bjj bjn bjr bju bna bnb bne bnj bnn bnr bnu bra brb bre brj brn brr bru bua bub bue buj bun bur buu eaa eab eae eaj ean ear eau eba ebb ebe ebj ebn ebr ebu eea eeb eee een eer eja eju en- ena enb ene enn enr enu era erb ere ern err eru eu- eua eub eue euj eun eur jaa jab jae jaj jan jar jau jba jbj jbr jbu jea jeb jee jej jen jer jeu jja jjb jjj jjr jju jna jne jnj jnn jnr jnu jra jrb jrn jrr jub jue jun jur naa nab nae naj nan nar nau nba nbb nbe nbn nbr nbu ne- nea neb nee nej nen ner neu nja nje njn nju nna nnb nne nnn nnu nra nrb nre nrj nrn nrr nru nua nub nue nuj nun nur nuu ra- raa rab rae raj ran rar rau rba rbb rbe rbn rbr rbu re- rea reb ree ren rer reu rja rjr rna rnb rnn rnr rnu rra rrb rrn rrr rru rua rub rue run rur ruu ua- uaa uab uae uaj uan uar uau uba ubb ube ubn ubr ubu uea ueb uee uen uer un- una unb une unn unr unu ur- ura urb ure urn urr uru uua uue uun uur uuu