a-ak aaaa aaab aaar aaba aabb aaka aara abaa abab abak abar abb- abba abbb abbr abra abza akaa akar akka akr- akra arab arak arar arba arka arr- arra arrk arrr arza aza- azab azar azaz azra azza baaa baak baar baaz baba babb babr bak- baka bakr bar- bara barb bark barr barz baza bbbb brab brak braz brka brkb brrr brza bzrk bzzz kaaa kaab kaak kaar kaba kabb kabr kabz kaka kakk kara karb kark karr karz kaza kazr kazz kbaa kbab kbak kbar kbaz kbba kbbb kbbk kbbr kbbz kbkb kbkk kbkr kbkz kbra kbrb kbrk kbrz kbzz kkaa kkar kkba kkbb kkbr kkbz kkkk kkrb kkrk kkrr kkrz kkzz krab krak krar kraz krba krbb krbk krbr krbz krka krkk krkr krkz krrb krrk krrr krrz krza krzk krzr krzz kzar kzaz kzbb kzbk kzbr kzbz kzkr kzkz kzrb kzrk kzrr kzrz kzza kzzb kzzk kzzr kzzz raab raak raaz raba rabb rabk raka rakk rara rarb rark rarz raza razr razz rbbb rbbr rrrr rzab rzka zaar zaba zabr zaka zakk zara zarb zark zarr zaza zbar zzzz