a-a a-b a-t aaa aab aae aan aas aat aaw ab- aba abb abe abn abs abt abw aea aeb aee aen aes aet aew an- ana anb ane ann ans ant as- asa asb ase asn ass ast asw at- ata atb ate atn ats att atw aw- awa awb awe awn aws awt aww baa bab bae ban bas bat baw bba bbb bbe bbn bbs bbt bbw be- bea beb bee ben bes bet bew bna bnb bne bnn bns bnt bnw bsa bsb bse bsn bss bst bsw bta btb bte btn bts btt btw bwa bwb bws eaa eab eae ean eas eat eaw eba ebb ebe ebn ebs ebt ebw eea eeb eee een ees eet eew en- ena enb ene enn ens ent enw es- esa esb ese esn ess est esw eta etb ete etn ets ett etw ewa ewb ewe ews ewt eww naa nab nae nan nas nat naw nba nbb nbe nbn nbs nbt nbw ne- nea neb nee nen nes net new nna nnb nne nnn nns nnt nnw nsa nsb nse nsn nss nst nsw nta ntb nte ntn nts ntt nwa nwb nwe nwn nws nwt saa sab sae san sas sat saw sba sbb sbe sbn sbs sbt sbw se- sea seb see sen ses set sew sna snb sne snn sns snt snw ss- ssa ssb sse ssn sss sst ssw sta stb ste stn sts stt stw swa swb swe swn sws swt taa tab tae tan tas tat taw tba tbb tbe tbn tbs tbt te- tea teb tee ten tes tet tew tna tnb tne tnn tns tnt tnw tsa tsb tse tsn tss tst tsw tta ttb tte ttn tts ttt ttw twa twb twe twn tws twt tww waa wab wae wan was wat waw wba wbb wbe wbn wbs wbt wbw wea web wee wen wes wet wew wn- wna wne wnn wns wnt wnw wsa wsb wse wsn wss wst wsw wta wtb wtn wts wtt wtw wwa wwe wwn wwt www