-ase a-ak a-be aaaa aaab aaae aaas aaba aabb aaea aaes aaka aake aasa aase aass abaa abab abae abak abas abb- abba abbb abbe abbs abee abes abs- absa abse abss aeas aebs aeka aess akaa akae akas akee akes akka aksa asaa asab asae asak asas asba asea asee asek ases aska aske asks assa asse assk asss baaa baak baas baba babb babe babs baek baes bak- baka bake baks basa base bask bass bbas bbbb bbbs bbeb beak beas beba bebb bebe beeb beek bees beka beke beks bes- besa bese besk bess bsaa bsas bsea bseb bsee bses bsse eaba easa ease ebba ebbs ebes ebsa eeea eeee eees eeka eeke eeks eese eesk eka- ekab ekeb ekek ekes ekka esab esas esba esbs esea esee esek eses eska eske esks essa esse kaaa kaab kaak kaas kaba kabb kabe kaes kaka kake kakk kaks kas- kasa kasb kase kask kass kbaa kbab kbae kbak kbas kbba kbbb kbbe kbbk kbbs kbeb kbee kbek kbes kbkb kbkk kbsa kbsb kbsk kbss kea- keak keas keba kebb kebe keek kees keka kekb keke keks kesa kesb kesk kess kkaa kkba kkbb kkbe kkbs kkea kkkk kksa kkse kkss ksab ksak ksas ksba ksbs ksea ksee ksek kska kskb kske kskk ksks kssa ksse ksss saab saae saak saas saba sabb sabe sabs saeb saek saes saka sakb sake sakk saks sasa sase sask sass sbaa sbas sbbs sbsa sbse se-e se-k se-s seaa seab seak seas seba sebe sebs seea seeb seek sees seka seke sekk sesa sese sess skab skee skes skss ssaa ssab ssas ssee sses sssa sssb ssss