a-a a-i a-t aaa aaf aag aai aan aar aas aat aax af- afa aff afg afi afn afr afs aft afx ag- aga agf agg agi agn agr ags agt agx ai- aia aif aig aii ain air ais ait aix an- ana anf ang ani ann anr ans ant anx ar- ara arf arg ari arn arr ars art arx as- asa asf asg asi asn asr ass ast asx at- ata atf atg ati atn atr ats att atx ax- axa axi axn axr axs axt axx faa faf fag fai fan far fas fat fax ffa fff ffg ffi ffn ffr ffs fft ffx fga fgf fgg fgi fgn fgr fgs fgt fia fif fig fii fin fir fis fit fix fna fnf fng fni fnn fnr fns fnt fnx fra frf frg fri frn frr frs frt fsa fsf fsg fsi fsn fsr fss fst fsx fta ftf ftg fti ftn ftr fts ftt ftx fxg fxi fxr fxs fxt fxx gaa gaf gag gai gan gar gas gat gfa gff gfi gfr gfs gft gfx gga ggg ggi ggn ggr ggs ggt gia gif gig gii gin gir gis git gna gnf gni gnn gnr gns gnt gra grf grg gri grn grr grs grt grx gsa gsf gsg gsi gsn gsr gss gst gsx gta gtf gtg gti gtn gtr gts gtt gtx gxa gxf gxs gxt i-f ia- iaa iaf iag iai ian iar ias iat ifa iff ifg ifi ifn ifr ifs ift ifx iga igf igg igi ign igr igs igt iia iif iii iin iir iis iit iix in- ina inf ing ini inn inr ins int inx ir- ira irf irg iri irn irr irs irt irx is- isa isf isg isi isn isr iss ist ita itf itg iti itn its itt itx ixi ixn n-i naa naf nag nai nan nar nas nat nax nfa nff nfi nfn nfr nfs nft nga ngf ngg ngi ngn ngs ngt nia nif nig nii nin nir nis nit nix nna nnf nng nni nnn nns nnt nra nrf nrg nri nrn nrr nrs nrt nrx nsa nsf nsg nsi nsn nsr nss nst nsx nta ntf ntg nti ntn ntr nts ntt ntx nxt ra- raa raf rag rai ran rar ras rat rax rfa rff rfg rfi rfn rfr rfs rft rga rgf rgg rgi rgn rgr rgs rgt rgx ria rif rig rii rin rir ris rit rix rna rng rni rnn rnr rns rnt rra rrf rrg rri rrn rrr rrs rrt rsa rsf rsg rsi rsn rsr rss rst rsx rta rtf rtg rti rtn rtr rts rtt rtx rxr rxs saa saf sag sai san sar sas sat sax sfa sff sfg sfi sfn sfr sfs sft sfx sga sgf sgg sgi sgn sgr sgs sgt sgx sia sif sig sii sin sir sis sit six sna snf sng sni snn snr sns snt sr- sra srf srg sri srn srr srs srt srx ss- ssa ssf ssg ssi ssn ssr sss sst ssx sta stf stg sti stn str sts stt stx sxi sxn sxs sxt t-x taa taf tag tai tan tar tas tat tax tfa tff tfg tfi tfn tfr tfs tft tfx tga tgf tgg tgi tgn tgr tgs tgt tia tif tig tii tin tir tis tit tix tna tnf tng tni tnn tnr tns tnt tnx tra trf trg tri trn trr trs trt trx tsa tsf tsg tsi tsn tsr tss tst tsx tta ttf ttg tti ttn ttr tts ttt ttx txf txi txn txs txt xaa xaf xag xan xar xas xat xfa xfn xfs xft xfx xgi xia xii xin xis xit xix xna xns xrf xrt xrx xsa xsi xss xst xtf xti xtr xts xtx xxi xxx