a-ak aaaa aaab aaal aaba aabb aabl aabt aaka aala aall aata aatk aatt abaa abab abak abal abat abb- abba abbb abbt abla abta akaa akal akka alaa alak alal alat alb- alba alk- alka alkb all- alla alll alta at-l at-t ataa atab atak atal atat atka atkt atla atta baaa baak baal baat baba babb bak- baka bakl bakt bala balk ball balt bata batt bbbb bblb blaa blab blak blat blbt blkb btaa btla bttb kaaa kaab kaak kaal kaat kaba kabb kaka kakk kakt kala kalb kalk kall kalt kat- kata katb katk katl katt kbaa kbab kbak kbal kbat kbba kbbb kbbk kbbl kbbt kbkb kbkk kbkl kbla kblb kbll kblt kbta kbtb kbtk kbtl kbtt kkaa kkal kkat kkba kkbb kkbl kkbt kkkk kklb kkll kktk kktl klaa klab klak klal klat klbb klbl klbt klka klkk klkl klla kllb kllk kltk kltt ktaa ktak ktal ktat ktba ktbb ktbl ktbt ktkb ktkk ktkt ktla ktlb ktlk ktlt kttk kttt laaa laak laal laat laba laka lala lall lata latt lkab lkal llat llll ltbl taa- taal taat taba tabb tabl taka takk takt tala talk tall tata tatb tatt tbta ttab ttbb tttt