a-a a-b aaa aab aae aaj aan aas aax ab- aba abb abe abj abn abs abx aea aeb aee aej aen aes aex aja ajb aje ajj ajn ajs an- ana anb ane anj ann ans anx as- asa asb ase asj asn ass asx ax- axa axe axj axn axs axx baa bab bae baj ban bas bax bba bbb bbe bbn bbs bbx be- bea beb bee ben bes bex bja bjj bjn bjs bna bnb bne bnj bnn bns bnx bsa bsb bse bsj bsn bss bsx bxb bxj bxn bxx eaa eab eae eaj ean eas eax eba ebb ebe ebj ebn ebs ebx eea eeb eee een ees eex eja en- ena enb ene enn ens es- esa esb ese esn ess esx ex- exa exe exs exx jaa jab jae jaj jan jas jax jba jbj jbs jea jeb jee jej jen jes jja jjb jjj jjs jna jne jnj jnn jns jsa jsb jse jsj jsn jss jxn jxs naa nab nae naj nan nas nax nba nbb nbe nbn nbs nbx ne- nea neb nee nej nen nes nex nja nje njn njs nna nnb nne nnn nns nsa nsb nse nsn nss nsx saa sab sae saj san sas sax sba sbb sbe sbj sbn sbs sbx se- sea seb see sej sen ses sex sja sjb sje sjj sjs sna snb sne snj snn sns ss- ssa ssb sse ssj ssn sss ssx sxn sxs xaa xan xas xbe xbx xee xen xes xex xjs xna xns xsa xsb xss xxx