a-a a-b a-t aaa aab aae aan aat aaw ab- aba abb abe abn abt abw aea aeb aee aen aet aew an- ana anb ane ann ant at- ata atb ate atn att atw aw- awa awb awe awn awt aww baa bab bae ban bat baw bba bbb bbe bbn bbt bbw be- bea beb bee ben bet bew bna bnb bne bnn bnt bnw bta btb bte btn btt btw bwa bwb eaa eab eae ean eat eaw eba ebb ebe ebn ebt ebw eea eeb eee een eet eew en- ena enb ene enn ent enw eta etb ete etn ett etw ewa ewb ewe ewt eww naa nab nae nan nat naw nba nbb nbe nbn nbt nbw ne- nea neb nee nen net new nna nnb nne nnn nnt nnw nta ntb nte ntn ntt nwa nwb nwe nwn nwt taa tab tae tan tat taw tba tbb tbe tbn tbt te- tea teb tee ten tet tew tna tnb tne tnn tnt tnw tta ttb tte ttn ttt ttw twa twb twe twn twt tww waa wab wae wan wat waw wba wbb wbe wbn wbt wbw wea web wee wen wet wew wn- wna wne wnn wnt wnw wta wtb wtn wtt wtw wwa wwe wwn wwt www