-er a-a a-b a-i a-z aaa aab aae aaf aai aan aao aar aas aau aaz ab- aba abb abe abf abi abn abo abr abs abu abz aea aeb aee aef aei aen aeo aer aes aeu aez af- afa afb afe aff afi afn afo afr afs afu afz ai- aia aib aie aif aii ain aio air ais aiu aiz an- ana anb ane anf ani ann ano anr ans anu anz aoa aob aoe aof aoi aon aoo aor aos aou ar- ara arb are arf ari arn aro arr ars aru arz as- asa asb ase asf asi asn aso asr ass asu asz au- aua aub aue auf aui aun auo aur aus auz az- aza azb aze azf azi azn azo azs azu azz b-u baa bab bae baf bai ban bao bar bas bau baz bba bbb bbe bbf bbi bbn bbo bbr bbs bbu be- bea beb bee bef bei ben beo ber bes beu bez bfa bfb bfe bff bfi bfn bfo bfr bfs bfu bfz bi- bia bib bie bif bii bin bio bir bis biu biz bna bnb bne bnf bni bnn bno bnr bns bnu bnz boa bob boe bof boi bon boo bor bos bou boz bra brb bre brf bri brn bro brr brs bru brz bsa bsb bse bsf bsi bsn bso bsr bss bsu bua bub bue buf bui bun buo bur bus buu buz bza bze bzf bzn bzo bzr bzs bzu bzz eaa eab eae eaf eai ean eao ear eas eau eaz eba ebb ebe ebf ebi ebn ebo ebr ebs ebu eea eeb eee eef een eeo eer ees ef- efa efb efe eff efi efo efr efs eia eib eie eif eii ein eio eir eis eiu en- ena enb ene enf eni enn eno enr ens enu enz eo- eoa eob eoe eof eoi eon eoo eor eos eou era erb ere erf eri ern ero err ers eru erz es- esa esb ese esf esi esn eso esr ess esu eu- eua eub eue euf eui eun eur eus eze ezf ezo ezr ezs ezz faa fab fae faf fai fan fao far fas fau faz fba fbb fbe fbf fbi fbn fbo fbr fbs fbu fea feb fee fef fei fen feo fer fes feu fez ffa ffe fff ffi ffn ffo ffr ffs ffu ffz fia fib fie fif fii fin fir fis fiu fiz fna fnb fne fnf fni fnn fnr fns fnu fnz foa fob foe fof foi fon foo for fos fou foz fra frb fre frf fri frn fro frr frs fru fsa fsb fse fsf fsi fsn fso fsr fss fsu fua fub fue fuf fui fun fuo fur fus fuu i-f ia- iaa iab iae iaf iai ian iao iar ias iau iaz iba ibb ibe ibf ibi ibn ibo ibr ibs ibu ibz ie- iea iee ief iei ien ier ies ifa ifb ife iff ifi ifn ifo ifr ifs ifu ifz iia iib iie iif iii iin iio iir iis iiu in- ina inb ine inf ini inn ino inr ins inu io- ioa iob ioe iof ioi ion ioo ior ios iou ir- ira irb ire irf iri irn iro irr irs iru is- isa isb ise isf isi isn iso isr iss isu iu- iua iub iue iui iur ius iuz iza ize izi izo izu izz n-i naa nab nae naf nai nan nao nar nas nau naz nba nbb nbe nbf nbi nbn nbo nbr nbs nbu ne- nea neb nee nef nei nen neo ner nes neu nez nfa nfb nfe nff nfi nfn nfo nfr nfs nfu nia nib nie nif nii nin nio nir nis niu niz nna nnb nne nnf nni nnn nno nns nnu nnz no- noa nob noe nof noi non noo nor nos nou noz nra nrb nre nrf nri nrn nro nrr nrs nru nrz nsa nsb nse nsf nsi nsn nso nsr nss nsu nsz nua nub nue nui nun nuo nur nus nuu nzb nze nzf nzi nzo nzs nzz o-i oaa oab oae oaf oai oan oao oar oas oau ob- oba obb obe obf obi obn obo obr obs obu oea oeb oee oef oei oen oeo oer oes of- ofa ofb ofe off ofi ofn ofo ofr ofs ofu ofz oia oib oie oif oii oin oio oir ois oiu oiz on- ona onb one onf oni onn ono onr ons onu oo- ooa oob oof ooi oon ooo oor oos or- ora orb ore orf ori orn oro orr ors oru orz os- osa osb ose osf osi osn oso osr oss osu ou- oua oue ouf oui oun ouo our ous oza oze ozo ozs ozu ozz ra- raa rab rae raf rai ran rao rar ras rau raz rba rbb rbe rbf rbi rbn rbo rbr rbs rbu re- rea reb ree ref rei ren reo rer res reu rez rfa rfb rfe rff rfi rfn rfo rfr rfs rfu rfz ria rib rie rif rii rin rio rir ris riz rna rnb rni rnn rno rnr rns rnu rnz roa rob roe rof roi ron roo ror ros rou roz rra rrb rrf rri rrn rrr rrs rru rsa rsb rse rsf rsi rsn rso rsr rss rsu rua rub rue ruf rui run ruo rur rus ruu ruz rza rzb rze rzo saa sab sae saf sai san sao sar sas sau saz sba sbb sbe sbf sbi sbn sbo sbr sbs sbu se- sea seb see sef sei sen seo ser ses seu sez sfa sfb sfe sff sfi sfn sfo sfr sfs sfu sfz sia sib sie sif sii sin sio sir sis siu sna snb sne snf sni snn sno snr sns snu soa sob soe sof soi son soo sor sos sou soz sr- sra srb sre srf sri srn sro srr srs ss- ssa ssb sse ssf ssi ssn