a-ak a-be aaaa aaab aaae aaar aaba aabb aaea aaka aake aara aare abaa abab abae abak abar abb- abba abbb abbe abbr abee aber abez abra abza aeer aeka aer- aera akaa akae akar akee aker akka akr- akra akre arab arae arak arar arba arbe area aree arek arka arke arr- arra arre arrk arrr arza aza- azab azar azaz azer azra azza baaa baak baar baaz baba babb babe babr baek baer baez bak- baka bake bakr bar- bara barb bare bark barr barz baza baze bbbb bbeb beak bear beba bebb bebe beeb beek beer beka beke bera bere berk berr beze brab brae brak braz brea breb bree brek brer brez brka brkb brrr brza bzer bzrk bzzz eaba eara earb eare ebba ebbr eber eeea eeee eeka eeke eera eeze eka- ekab ekeb ekek eker ekka eraz erba erbb erbe ereb erer erez erke erra erre ezek ezer ezra kaaa kaab kaak kaar kaba kabb kabe kabr kabz kaer kaka kake kakk kara karb kare kark karr karz kaza kaze kazr kazz kbaa kbab kbae kbak kbar kbaz kbba kbbb kbbe kbbk kbbr kbbz kbeb kbee kbek kber kbez kbkb kbkk kbkr kbkz kbra kbrb kbre kbrk kbrz kbze kbzz kea- keak kear keaz keba kebb kebe kebr keek keer keka kekb keke ker- kera kerb kere kerk kerr kerz keza kezb keze kezr kezz kkaa kkar kkba kkbb kkbe kkbr kkbz kkea kkez kkkk kkrb kkre kkrk kkrr kkrz kkzz krab krae krak krar kraz krba krbb krbe krbk krbr krbz krea kreb kree krek krez krka krke krkk krkr krkz krrb krre krrk krrr krrz krza krze krzk krzr krzz kzar kzaz kzbb kzbe kzbk kzbr kzbz kzee kzer kzke kzkr kzkz kzrb kzrk kzrr kzrz kzza kzzb kzzk kzzr kzzz raab raak raaz raba rabb rabe rabk raer raka rake rakk rara rarb rare rark rarz raza raze razr razz rbbb rbbr rea- reae reak rear reba rebb rebe rebk reeb reek reka reke rera rere reza reze rrrr rzab rzka zaar zaba zabr zaer zaka zakk zara zarb zare zark zarr zaza zbar zbek zber zeae zeba zebe zeek zeke zekr zera zerk zeze zrze zzzz