a-a a-i a-t aaa aaf aai aan aar aat aax af- afa aff afi afn afr aft afx ai- aia aif aii ain air ait aix an- ana anf ani ann anr ant anx ar- ara arf ari arn arr art arx at- ata atf ati atn atr att atx ax- axa axi axn axr axt axx faa faf fai fan far fat fax ffa fff ffi ffn ffr fft ffx fia fif fii fin fir fit fix fna fnf fni fnn fnr fnt fnx fra frf fri frn frr frt fta ftf fti ftn ftr ftt ftx fxi fxr fxt fxx i-f ia- iaa iaf iai ian iar iat ifa iff ifi ifn ifr ift ifx iia iif iii iin iir iit iix in- ina inf ini inn inr int inx ir- ira irf iri irn irr irt irx ita itf iti itn itt itx ixi ixn n-i naa naf nai nan nar nat nax nfa nff nfi nfn nfr nft nia nif nii nin nir nit nix nna nnf nni nnn nnt nra nrf nri nrn nrr nrt nrx nta ntf nti ntn ntr ntt ntx nxt ra- raa raf rai ran rar rat rax rfa rff rfi rfn rfr rft ria rif rii rin rir rit rix rna rni rnn rnr rnt rra rrf rri rrn rrr rrt rta rtf rti rtn rtr rtt rtx rxr t-x taa taf tai tan tar tat tax tfa tff tfi tfn tfr tft tfx tia tif tii tin tir tit tix tna tnf tni tnn tnr tnt tnx tra trf tri trn trr trt trx tta ttf tti ttn ttr ttt ttx txf txi txn txt xaa xaf xan xar xat xfa xfn xft xfx xia xii xin xit xix xna xrf xrt xrx xtf xti xtr xtx xxi xxx