-er a-a a-i aaa aae aaf aai aan aar aas aau aax aea aee aef aei aen aer aes aeu aex af- afa afe aff afi afn afr afs afu afx ai- aia aie aif aii ain air ais aiu aix an- ana ane anf ani ann anr ans anu anx ar- ara are arf ari arn arr ars aru arx as- asa ase asf asi asn asr ass asu asx au- aua aue auf aui aun aur aus aux ax- axa axe axi axn axr axs axx eaa eae eaf eai ean ear eas eau eax eea eee eef een eer ees eex ef- efa efe eff efi efr efs efx eia eie eif eii ein eir eis eiu eix en- ena ene enf eni enn enr ens enu era ere erf eri ern err ers eru es- esa ese esf esi esn esr ess esu esx eu- eua eue euf eui eun eur eus eux ex- exa exe exi exr exs exu exx faa fae faf fai fan far fas fau fax fea fee fef fei fen fer fes feu fex ffa ffe fff ffi ffn ffr ffs ffu ffx fia fie fif fii fin fir fis fiu fix fna fne fnf fni fnn fnr fns fnu fnx fra fre frf fri frn frr frs fru fsa fse fsf fsi fsn fsr fss fsu fsx fua fue fuf fui fun fur fus fuu fux fxe fxi fxr fxs fxu fxx i-f ia- iaa iae iaf iai ian iar ias iau ie- iea iee ief iei ien ier ies iex ifa ife iff ifi ifn ifr ifs ifu ifx iia iie iif iii iin iir iis iiu iix in- ina ine inf ini inn inr ins inu inx ir- ira ire irf iri irn irr irs iru irx is- isa ise isf isi isn isr iss isu iu- iua iue iui iur ius ixe ixi ixn n-i naa nae naf nai nan nar nas nau nax ne- nea nee nef nei nen ner nes neu nex nfa nfe nff nfi nfn nfr nfs nfu nia nie nif nii nin nir nis niu nix nna nne nnf nni nnn nns nnu nra nre nrf nri nrn nrr nrs nru nrx nsa nse nsf nsi nsn nsr nss nsu nsx nua nue nui nun nur nus nuu nux ra- raa rae raf rai ran rar ras rau rax re- rea ree ref rei ren rer res reu rex rfa rfe rff rfi rfn rfr rfs rfu ria rie rif rii rin rir ris rix rna rni rnn rnr rns rnu rra rrf rri rrn rrr rrs rru rsa rse rsf rsi rsn rsr rss rsu rsx rua rue ruf rui run rur rus ruu rux rxr rxs saa sae saf sai san sar sas sau sax se- sea see sef sei sen ser ses seu sex sfa sfe sff sfi sfn sfr sfs sfu sfx sia sie sif sii sin sir sis siu six sna sne snf sni snn snr sns snu sr- sra sre srf sri srn srr srs srx ss- ssa sse ssf ssi ssn ssr sss ssu ssx sua sue suf sui sun sur sus suu sux sxi sxn sxs sxu ua- uaa uae uaf uai uan uar uas uau uea uee uef uei uen uer ues ufa ufe uff ufi ufn ufr ufs ufu ufx uia uie uif uii uin uir uis uiu un- una une unf uni unn unr uns unu unx ur- ura ure urf uri urn urr urs uru urx usa use usf usi usn usr uss usu usx uua uue uun uur uus uuu uxf uxr uxu xaa xaf xan xar xas xau xee xen xer xes xeu xex xfa xfe xfn xfs xfx xia xie xii xin xis xiu xix xna xns xnu xrf xrx xsa xsi xss xue xui xun xus xxi xxx