a-a a-b a-i aaa aab aad aai aan aar aau ab- aba abb abd abi abn abr abu ad- ada adb add adi adn adr adu ai- aia aib aid aii ain air aiu an- ana anb and ani ann anr anu ar- ara arb ard ari arn arr aru au- aua aub aud aui aun aur b-u baa bab bad bai ban bar bau bba bbb bbd bbi bbn bbr bbu bda bdb bdd bdi bdr bdu bi- bia bib bid bii bin bir biu bna bnb bnd bni bnn bnr bnu bra brb brd bri brn brr bru bua bub bud bui bun bur buu daa dab dad dai dan dar dau dba dbb dbd dbi dbn dbr dbu dda ddb ddd ddi ddn ddr ddu di- dia dib did dii din dir diu dna dnb dnd dni dnn dnr dra drb drd dri drn drr dru dua dub dud dui dun dur i-d ia- iaa iab iad iai ian iar iau iba ibb ibd ibi ibn ibr ibu ida idb idd idi idn idr idu iia iib iid iii iin iir iiu in- ina inb ind ini inn inr inu ir- ira irb ird iri irn irr iru iu- iua iub iud iui iur n-i naa nab nad nai nan nar nau nba nbb nbd nbi nbn nbr nbu nda ndb ndd ndi ndn ndr ndu nia nib nid nii nin nir niu nna nnb nni nnn nnu nra nrb nrd nri nrn nrr nru nua nub nud nui nun nur nuu ra- raa rab rad rai ran rar rau rba rbb rbd rbi rbn rbr rbu rda rdb rdd rdi rdn rdr rdu ria rib rid rii rin rir rna rnb rnd rni rnn rnr rnu rra rrb rrd rri rrn rrr rru rua rub rud rui run rur ruu ua- uaa uab uad uai uan uar uau uba ubb ubi ubn ubr ubu uda udb udd udi udn udr udu uia uib uid uii uin uir uiu un- una unb und uni unn unr unu ur- ura urb urd uri urn urr uru uua uun uur uuu