a-a a-i a-t aaa aaf aai aan aar aas aat aax af- afa aff afi afn afr afs aft afx ai- aia aif aii ain air ais ait aix an- ana anf ani ann anr ans ant anx ar- ara arf ari arn arr ars art arx as- asa asf asi asn asr ass ast asx at- ata atf ati atn atr ats att atx ax- axa axi axn axr axs axt axx faa faf fai fan far fas fat fax ffa fff ffi ffn ffr ffs fft ffx fia fif fii fin fir fis fit fix fna fnf fni fnn fnr fns fnt fnx fra frf fri frn frr frs frt fsa fsf fsi fsn fsr fss fst fsx fta ftf fti ftn ftr fts ftt ftx fxi fxr fxs fxt fxx i-f ia- iaa iaf iai ian iar ias iat ifa iff ifi ifn ifr ifs ift ifx iia iif iii iin iir iis iit iix in- ina inf ini inn inr ins int inx ir- ira irf iri irn irr irs irt irx is- isa isf isi isn isr iss ist ita itf iti itn its itt itx ixi ixn n-i naa naf nai nan nar nas nat nax nfa nff nfi nfn nfr nfs nft nia nif nii nin nir nis nit nix nna nnf nni nnn nns nnt nra nrf nri nrn nrr nrs nrt nrx nsa nsf nsi nsn nsr nss nst nsx nta ntf nti ntn ntr nts ntt ntx nxt ra- raa raf rai ran rar ras rat rax rfa rff rfi rfn rfr rfs rft ria rif rii rin rir ris rit rix rna rni rnn rnr rns rnt rra rrf rri rrn rrr rrs rrt rsa rsf rsi rsn rsr rss rst rsx rta rtf rti rtn rtr rts rtt rtx rxr rxs saa saf sai san sar sas sat sax sfa sff sfi sfn sfr sfs sft sfx sia sif sii sin sir sis sit six sna snf sni snn snr sns snt sr- sra srf sri srn srr srs srt srx ss- ssa ssf ssi ssn ssr sss sst ssx sta stf sti stn str sts stt stx sxi sxn sxs sxt t-x taa taf tai tan tar tas tat tax tfa tff tfi tfn tfr tfs tft tfx tia tif tii tin tir tis tit tix tna tnf tni tnn tnr tns tnt tnx tra trf tri trn trr trs trt trx tsa tsf tsi tsn tsr tss tst tsx tta ttf tti ttn ttr tts ttt ttx txf txi txn txs txt xaa xaf xan xar xas xat xfa xfn xfs xft xfx xia xii xin xis xit xix xna xns xrf xrt xrx xsa xsi xss xst xtf xti xtr xts xtx xxi xxx