a-a a-t aaa aae aak aan aas aat aax aea aee aek aen aes aet aex aka ake akk akn aks an- ana ane ank ann ans ant anx as- asa ase ask asn ass ast asx at- ata ate atn ats att atx ax- axa axe axk axn axs axt axx eaa eae eak ean eas eat eax eea eee eek een ees eet eex eka eke eks ekt en- ena ene enk enn ens ent es- esa ese esk esn ess est esx eta ete etk etn ets ett etx ex- exa exe exs ext exx k-t ka- kaa kae kak kan kas kat kax ke- kea kee kek ken kes ket kex kke kkk kkn kks kkt kn- kna kne knk knn knt knx ksa kse ksk ksn kss kst kta kte ktk ktn kts ktt naa nae nak nan nas nat nax ne- nea nee nek nen nes net nex nka nke nkk nkn nks nkt nna nne nnk nnn nns nnt nsa nse nsk nsn nss nst nsx nta nte ntk ntn nts ntt ntx nxt saa sae sak san sas sat sax se- sea see sek sen ses set sex sk- ska ske skk sks skt skx sna sne snk snn sns snt ss- ssa sse ssk ssn sss sst ssx sta ste stk stn sts stt stx sxn sxs sxt t-x taa tae tak tan tas tat tax te- tea tee tek ten tes tet tex tka tke tkk tks tkt tna tne tnk tnn tns tnt tnx tsa tse tsk tsn tss tst tsx tta tte ttk ttn tts ttt ttx txe txk txn txs txt xaa xak xan xas xat xee xen xes xet xex xke xks xna xnk xns xsa xss xst xts xtx xxx