-er a-a a-i a-t aaa aae aaf aai aan aar aat aax aea aee aef aei aen aer aet aex af- afa afe aff afi afn afr aft afx ai- aia aie aif aii ain air ait aix an- ana ane anf ani ann anr ant anx ar- ara are arf ari arn arr art arx at- ata ate atf ati atn atr att atx ax- axa axe axi axn axr axt axx eaa eae eaf eai ean ear eat eax eea eee eef een eer eet eex ef- efa efe eff efi efr eft efx eia eie eif eii ein eir eit eix en- ena ene enf eni enn enr ent era ere erf eri ern err ert eta ete etf eti etn etr ett etx ex- exa exe exi exr ext exx faa fae faf fai fan far fat fax fea fee fef fei fen fer fet fex ffa ffe fff ffi ffn ffr fft ffx fia fie fif fii fin fir fit fix fna fne fnf fni fnn fnr fnt fnx fra fre frf fri frn frr frt fta fte ftf fti ftn ftr ftt ftx fxe fxi fxr fxt fxx i-f ia- iaa iae iaf iai ian iar iat ie- iea iee ief iei ien ier iet iex ifa ife iff ifi ifn ifr ift ifx iia iie iif iii iin iir iit iix in- ina ine inf ini inn inr int inx ir- ira ire irf iri irn irr irt irx ita ite itf iti itn itt itx ixe ixi ixn n-i naa nae naf nai nan nar nat nax ne- nea nee nef nei nen ner net nex nfa nfe nff nfi nfn nfr nft nia nie nif nii nin nir nit nix nna nne nnf nni nnn nnt nra nre nrf nri nrn nrr nrt nrx nta nte ntf nti ntn ntr ntt ntx nxt ra- raa rae raf rai ran rar rat rax re- rea ree ref rei ren rer ret rex rfa rfe rff rfi rfn rfr rft ria rie rif rii rin rir rit rix rna rni rnn rnr rnt rra rrf rri rrn rrr rrt rta rte rtf rti rtn rtr rtt rtx rxr t-x taa tae taf tai tan tar tat tax te- tea tee tef tei ten ter tet tex tfa tfe tff tfi tfn tfr tft tfx tia tie tif tii tin tir tit tix tna tne tnf tni tnn tnr tnt tnx tra tre trf tri trn trr trt trx tta tte ttf tti ttn ttr ttt ttx txe txf txi txn txt xaa xaf xan xar xat xee xen xer xet xex xfa xfe xfn xft xfx xia xie xii xin xit xix xna xrf xrt xrx xtf xti xtr xtx xxi xxx