-er a-a a-b a-i aaa aab aad aae aai aan aar aau ab- aba abb abd abe abi abn abr abu ad- ada adb add ade adi adn adr adu aea aeb aed aee aei aen aer aeu ai- aia aib aid aie aii ain air aiu an- ana anb and ane ani ann anr anu ar- ara arb ard are ari arn arr aru au- aua aub aud aue aui aun aur b-u baa bab bad bae bai ban bar bau bba bbb bbd bbe bbi bbn bbr bbu bda bdb bdd bde bdi bdr bdu be- bea beb bed bee bei ben ber beu bi- bia bib bid bie bii bin bir biu bna bnb bnd bne bni bnn bnr bnu bra brb brd bre bri brn brr bru bua bub bud bue bui bun bur buu daa dab dad dae dai dan dar dau dba dbb dbd dbe dbi dbn dbr dbu dda ddb ddd dde ddi ddn ddr ddu de- dea deb ded dee dei den der deu di- dia dib did die dii din dir diu dna dnb dnd dne dni dnn dnr dra drb drd dre dri drn drr dru dua dub dud due dui dun dur eaa eab ead eae eai ean ear eau eba ebb ebd ebe ebi ebn ebr ebu ed- eda edb edd ede edi edn edr edu eea eeb eed eee een eer eia eib eid eie eii ein eir eiu en- ena enb end ene eni enn enr enu era erb erd ere eri ern err eru eu- eua eub eud eue eui eun eur i-d ia- iaa iab iad iae iai ian iar iau iba ibb ibd ibe ibi ibn ibr ibu ida idb idd ide idi idn idr idu ie- iea ied iee iei ien ier iia iib iid iie iii iin iir iiu in- ina inb ind ine ini inn inr inu ir- ira irb ird ire iri irn irr iru iu- iua iub iud iue iui iur n-i naa nab nad nae nai nan nar nau nba nbb nbd nbe nbi nbn nbr nbu nda ndb ndd nde ndi ndn ndr ndu ne- nea neb ned nee nei nen ner neu nia nib nid nie nii nin nir niu nna nnb nne nni nnn nnu nra nrb nrd nre nri nrn nrr nru nua nub nud nue nui nun nur nuu ra- raa rab rad rae rai ran rar rau rba rbb rbd rbe rbi rbn rbr rbu rda rdb rdd rde rdi rdn rdr rdu re- rea reb red ree rei ren rer reu ria rib rid rie rii rin rir rna rnb rnd rni rnn rnr rnu rra rrb rrd rri rrn rrr rru rua rub rud rue rui run rur ruu ua- uaa uab uad uae uai uan uar uau uba ubb ube ubi ubn ubr ubu uda udb udd ude udi udn udr udu uea ueb ued uee uei uen uer uia uib uid uie uii uin uir uiu un- una unb und une uni unn unr unu ur- ura urb urd ure uri urn urr uru uua uue uun uur uuu