a-a a-t aaa aan aas aat aax aay an- ana ann ans ant anx any as- asa asn ass ast asx asy at- ata atn ats att atx ax- axa axn axs axt axx ay- aya ayn ays ayt ayx naa nan nas nat nax nay nna nnn nns nnt nsa nsn nss nst nsx nsy nta ntn nts ntt ntx nxt nya nyn nys nyt nyx nyy saa san sas sat sax say sna snn sns snt sny ss- ssa ssn sss sst ssx sta stn sts stt stx sty sxn sxs sxt sy- sya syn sys syt syx t-x taa tan tas tat tax tay tna tnn tns tnt tnx tsa tsn tss tst tsx tsy tta ttn tts ttt ttx tty txn txs txt tya tyn tys tyt xaa xan xas xat xna xns xsa xss xst xts xtx xty xxx xxy xyy yaa yan yas yat yax yay yna ynn yns yny ysa yss yst ysy yta ytn yts ytt yxa yxy yys yyt yyy