-er a-a a-b a-i aaa aab aad aae aaf aai aan aar aau ab- aba abb abd abe abf abi abn abr abu ad- ada adb add ade adf adi adn adr adu aea aeb aed aee aef aei aen aer aeu af- afa afb afd afe aff afi afn afr afu ai- aia aib aid aie aif aii ain air aiu an- ana anb and ane anf ani ann anr anu ar- ara arb ard are arf ari arn arr aru au- aua aub aud aue auf aui aun aur b-u baa bab bad bae baf bai ban bar bau bba bbb bbd bbe bbf bbi bbn bbr bbu bda bdb bdd bde bdf bdi bdr bdu be- bea beb bed bee bef bei ben ber beu bfa bfb bfd bfe bff bfi bfn bfr bfu bi- bia bib bid bie bif bii bin bir biu bna bnb bnd bne bnf bni bnn bnr bnu bra brb brd bre brf bri brn brr bru bua bub bud bue buf bui bun bur buu daa dab dad dae daf dai dan dar dau dba dbb dbd dbe dbf dbi dbn dbr dbu dda ddb ddd dde ddf ddi ddn ddr ddu de- dea deb ded dee def dei den der deu dfa dfb dfd dfe dff dfi dfn dfr dfu di- dia dib did die dif dii din dir diu dna dnb dnd dne dnf dni dnn dnr dra drb drd dre dri drn drr dru dua dub dud due duf dui dun dur eaa eab ead eae eaf eai ean ear eau eba ebb ebd ebe ebf ebi ebn ebr ebu ed- eda edb edd ede edf edi edn edr edu eea eeb eed eee eef een eer ef- efa efb efd efe eff efi efr eia eib eid eie eif eii ein eir eiu en- ena enb end ene enf eni enn enr enu era erb erd ere erf eri ern err eru eu- eua eub eud eue euf eui eun eur faa fab fad fae faf fai fan far fau fba fbb fbd fbe fbf fbi fbn fbr fbu fda fdb fdd fde fdf fdi fdn fdr fdu fea feb fed fee fef fei fen fer feu ffa ffd ffe fff ffi ffn ffr ffu fia fib fid fie fif fii fin fir fiu fna fnb fnd fne fnf fni fnn fnr fnu fra frb frd fre frf fri frn frr fru fua fub fud fue fuf fui fun fur fuu i-d i-f ia- iaa iab iad iae iaf iai ian iar iau iba ibb ibd ibe ibf ibi ibn ibr ibu ida idb idd ide idf idi idn idr idu ie- iea ied iee ief iei ien ier ifa ifb ifd ife iff ifi ifn ifr ifu iia iib iid iie iif iii iin iir iiu in- ina inb ind ine inf ini inn inr inu ir- ira irb ird ire irf iri irn irr iru iu- iua iub iud iue iui iur n-i naa nab nad nae naf nai nan nar nau nba nbb nbd nbe nbf nbi nbn nbr nbu nda ndb ndd nde ndf ndi ndn ndr ndu ne- nea neb ned nee nef nei nen ner neu nfa nfb nfd nfe nff nfi nfn nfr nfu nia nib nid nie nif nii nin nir niu nna nnb nne nnf nni nnn nnu nra nrb nrd nre nrf nri nrn nrr nru nua nub nud nue nui nun nur nuu ra- raa rab rad rae raf rai ran rar rau rba rbb rbd rbe rbf rbi rbn rbr rbu rda rdb rdd rde rdf rdi rdn rdr rdu re- rea reb red ree ref rei ren rer reu rfa rfb rfd rfe rff rfi rfn rfr rfu ria rib rid rie rif rii rin rir rna rnb rnd rni rnn rnr rnu rra rrb rrd rrf rri rrn rrr rru rua rub rud rue ruf rui run rur ruu ua- uaa uab uad uae uaf uai uan uar uau uba ubb ube ubf ubi ubn ubr ubu uda udb udd ude udf udi udn udr udu uea ueb ued uee uef uei uen uer ufa ufd ufe uff ufi ufn ufr ufu uia uib uid uie uif uii uin uir uiu un- una unb und une unf uni unn unr unu ur- ura urb urd ure urf uri urn urr uru uua uue uun uur uuu