-er a-a a-b a-i a-t aaa aab aae aaf aai aan aao aar aas aat aau ab- aba abb abe abf abi abn abo abr abs abt abu aea aeb aee aef aei aen aeo aer aes aet aeu af- afa afb afe aff afi afn afo afr afs aft afu ai- aia aib aie aif aii ain aio air ais ait aiu an- ana anb ane anf ani ann ano anr ans ant anu aoa aob aoe aof aoi aon aoo aor aos aot aou ar- ara arb are arf ari arn aro arr ars art aru as- asa asb ase asf asi asn aso asr ass ast asu at- ata atb ate atf ati atn ato atr ats att atu au- aua aub aue auf aui aun auo aur aus aut b-u baa bab bae baf bai ban bao bar bas bat bau bba bbb bbe bbf bbi bbn bbo bbr bbs bbt bbu be- bea beb bee bef bei ben beo ber bes bet beu bfa bfb bfe bff bfi bfn bfo bfr bfs bft bfu bi- bia bib bie bif bii bin bio bir bis bit biu bna bnb bne bnf bni bnn bno bnr bns bnt bnu boa bob boe bof boi bon boo bor bos bot bou bra brb bre brf bri brn bro brr brs brt bru bsa bsb bse bsf bsi bsn bso bsr bss bst bsu bta btb bte btf bti btn bto btr bts btt btu bua bub bue buf bui bun buo bur bus but buu eaa eab eae eaf eai ean eao ear eas eat eau eba ebb ebe ebf ebi ebn ebo ebr ebs ebt ebu eea eeb eee eef een eeo eer ees eet ef- efa efb efe eff efi efo efr efs eft eia eib eie eif eii ein eio eir eis eit eiu en- ena enb ene enf eni enn eno enr ens ent enu eo- eoa eob eoe eof eoi eon eoo eor eos eot eou era erb ere erf eri ern ero err ers ert eru es- esa esb ese esf esi esn eso esr ess est esu eta etb ete etf eti etn eto etr ets ett etu eu- eua eub eue euf eui eun eur eus eut faa fab fae faf fai fan fao far fas fat fau fba fbb fbe fbf fbi fbn fbo fbr fbs fbt fbu fea feb fee fef fei fen feo fer fes fet feu ffa ffe fff ffi ffn ffo ffr ffs fft ffu fia fib fie fif fii fin fir fis fit fiu fna fnb fne fnf fni fnn fnr fns fnt fnu foa fob foe fof foi fon foo for fos fot fou fra frb fre frf fri frn fro frr frs frt fru fsa fsb fse fsf fsi fsn fso fsr fss fst fsu fta ftb fte ftf fti ftn fto ftr fts ftt ftu fua fub fue fuf fui fun fuo fur fus fut fuu i-f ia- iaa iab iae iaf iai ian iao iar ias iat iau iba ibb ibe ibf ibi ibn ibo ibr ibs ibt ibu ie- iea iee ief iei ien ier ies iet ifa ifb ife iff ifi ifn ifo ifr ifs ift ifu iia iib iie iif iii iin iio iir iis iit iiu in- ina inb ine inf ini inn ino inr ins int inu io- ioa iob ioe iof ioi ion ioo ior ios iot iou ir- ira irb ire irf iri irn iro irr irs irt iru is- isa isb ise isf isi isn iso isr iss ist isu ita itb ite itf iti itn ito its itt itu iu- iua iub iue iui iur ius iut n-i naa nab nae naf nai nan nao nar nas nat nau nba nbb nbe nbf nbi nbn nbo nbr nbs nbt nbu ne- nea neb nee nef nei nen neo ner nes net neu nfa nfb nfe nff nfi nfn nfo nfr nfs nft nfu nia nib nie nif nii nin nio nir nis nit niu nna nnb nne nnf nni nnn nno nns nnt nnu no- noa nob noe nof noi non noo nor nos not nou nra nrb nre nrf nri nrn nro nrr nrs nrt nru nsa nsb nse nsf nsi nsn nso nsr nss nst nsu nta ntb nte ntf nti ntn nto ntr nts ntt ntu nua nub nue nui nun nuo nur nus nut nuu o-i oaa oab oae oaf oai oan oao oar oas oat oau ob- oba obb obe obf obi obn obo obr obs obt obu oea oeb oee oef oei oen oeo oer oes oet of- ofa ofb ofe off ofi ofn ofo ofr ofs oft ofu oia oib oie oif oii oin oio oir ois oit oiu on- ona onb one onf oni onn ono onr ons ont onu oo- ooa oob oof ooi oon ooo oor oos oot or- ora orb ore orf ori orn oro orr ors ort oru os- osa osb ose osf osi osn oso osr oss ost osu ot- ota otb ote otf oti otn oto otr ots ott otu ou- oua oue ouf oui oun ouo our ous out ra- raa rab rae raf rai ran rao rar ras rat rau rba rbb rbe rbf rbi rbn rbo rbr rbs rbt rbu re- rea reb ree ref rei ren reo rer res ret reu rfa rfb rfe rff rfi rfn rfo rfr rfs rft rfu ria rib rie rif rii rin rio rir ris rit rna rnb rni rnn rno rnr rns rnt rnu roa rob roe rof roi ron roo ror ros rot rou rra rrb rrf rri rrn rrr rrs rrt rru rsa rsb rse rsf rsi rsn rso rsr rss rst rsu rta rtb rte rtf rti rtn rto rtr rts rtt rtu rua rub rue ruf rui run ruo rur rus rut ruu saa sab sae saf sai san sao sar sas sat sau sba sbb sbe sbf sbi sbn sbo sbr