a-ak a-be a-wa aaaa aaab aaae aaba aabb aabw aaea aaka aake aaww abaa abab abae abak abaw abb- abba abbb abbe abee abwa abwe aeka akaa akae akee akka akwa awae awbe awe- aweb awee awka awwa baaa baak baba babb babe baek bak- baka bake baw- bawe bawk bbbb bbeb beak beaw beba bebb bebe beeb beek beka beke bewa bewe bwaa eaba ebba ebbw eeea eeee eeka eeke eka- ekab ekeb ekek ekka ekwe ewew kaaa kaab kaak kaba kabb kabe kabw kaka kake kakk kaw- kawa kawe kawk kaww kbaa kbab kbae kbak kbba kbbb kbbe kbbk kbbw kbeb kbee kbek kbew kbkb kbkk kbkw kbwa kbwb kbww kea- keak keba kebb kebe keek keka kekb keke kewa kewb kewe kkaa kkaw kkba kkbb kkbe kkea kkkk kkwb kkwe kkwk kwab kwak kwaw kwbe kwbw kweb kwee kwka kwkb kwkk kwkw kwwk waaa waaw waba wabb wabe wabk wabw waeb waee waew waka wakb wake wakk wakw wawa wawb wawe wawk wbaa wbab wbae wbak wbbb wbbe wbbk wbbw wbea wbeb wbek wbew wbka wbkb wbke wbkk wbkw wbwb weaa weak webb webe weeb week weka wekb weke wekw wewe wkaa wkak wkba wkbe wkbk wkbw wkeb wkew wkkb wkkw wwab wwba wwbb wwea wweb wwka wwkb wwwa wwwe wwwk wwww