-er a-a a-b a-i a-t aaa aab aad aae aai aan aar aat aau ab- aba abb abd abe abi abn abr abt abu ad- ada adb add ade adi adn adr adt adu aea aeb aed aee aei aen aer aet aeu ai- aia aib aid aie aii ain air ait aiu an- ana anb and ane ani ann anr ant anu ar- ara arb ard are ari arn arr art aru at- ata atb atd ate ati atn atr att atu au- aua aub aud aue aui aun aur aut b-u baa bab bad bae bai ban bar bat bau bba bbb bbd bbe bbi bbn bbr bbt bbu bda bdb bdd bde bdi bdr bdt bdu be- bea beb bed bee bei ben ber bet beu bi- bia bib bid bie bii bin bir bit biu bna bnb bnd bne bni bnn bnr bnt bnu bra brb brd bre bri brn brr brt bru bta btb btd bte bti btn btr btt btu bua bub bud bue bui bun bur but buu daa dab dad dae dai dan dar dat dau dba dbb dbd dbe dbi dbn dbr dbt dbu dda ddb ddd dde ddi ddn ddr ddt ddu de- dea deb ded dee dei den der det deu di- dia dib did die dii din dir dit diu dna dnb dnd dne dni dnn dnr dnt dra drb drd dre dri drn drr drt dru dta dtb dtd dte dti dtn dtr dtt dtu dua dub dud due dui dun dur dut eaa eab ead eae eai ean ear eat eau eba ebb ebd ebe ebi ebn ebr ebt ebu ed- eda edb edd ede edi edn edr edt edu eea eeb eed eee een eer eet eia eib eid eie eii ein eir eit eiu en- ena enb end ene eni enn enr ent enu era erb erd ere eri ern err ert eru eta etb etd ete eti etn etr ett etu eu- eua eub eud eue eui eun eur eut i-d ia- iaa iab iad iae iai ian iar iat iau iba ibb ibd ibe ibi ibn ibr ibt ibu ida idb idd ide idi idn idr idt idu ie- iea ied iee iei ien ier iet iia iib iid iie iii iin iir iit iiu in- ina inb ind ine ini inn inr int inu ir- ira irb ird ire iri irn irr irt iru ita itb itd ite iti itn itt itu iu- iua iub iud iue iui iur iut n-i naa nab nad nae nai nan nar nat nau nba nbb nbd nbe nbi nbn nbr nbt nbu nda ndb ndd nde ndi ndn ndr ndt ndu ne- nea neb ned nee nei nen ner net neu nia nib nid nie nii nin nir nit niu nna nnb nne nni nnn nnt nnu nra nrb nrd nre nri nrn nrr nrt nru nta ntb ntd nte nti ntn ntr ntt ntu nua nub nud nue nui nun nur nut nuu ra- raa rab rad rae rai ran rar rat rau rba rbb rbd rbe rbi rbn rbr rbt rbu rda rdb rdd rde rdi rdn rdr rdt rdu re- rea reb red ree rei ren rer ret reu ria rib rid rie rii rin rir rit rna rnb rnd rni rnn rnr rnt rnu rra rrb rrd rri rrn rrr rrt rru rta rtb rtd rte rti rtn rtr rtt rtu rua rub rud rue rui run rur rut ruu taa tab tad tae tai tan tar tat tau tba tbb tbd tbe tbi tbn tbr tbt tbu tda tdb tdd tde tdi tdn tdr tdt tdu te- tea teb ted tee tei ten ter tet teu tia tib tid tie tii tin tir tit tiu tna tnb tnd tne tni tnn tnr tnt tra trb trd tre tri trn trr trt tru tta ttb ttd tte tti ttn ttr ttt ttu tua tub tud tue tui tun tur tut tuu ua- uaa uab uad uae uai uan uar uat uau uba ubb ube ubi ubn ubr ubt ubu uda udb udd ude udi udn udr udt udu uea ueb ued uee uei uen uer uet uia uib uid uie uii uin uir uit uiu un- una unb und une uni unn unr unt unu ur- ura urb urd ure uri urn urr urt uru uta utb utd ute uti utn utr utt utu uua uue uun uur uut uuu