a-ak a-ok aaaa aaab aaal aaba aabb aabl aaka aala aall aalo aaoo abaa abab abak abal abb- abba abbb abbo abla ablo aboa abob abok abol aboo akaa akal akao akka akko aklo akok alaa alak alal alao alb- alba albo alk- alka alkb alko all- alla alll allo aloa alok alol aloo aoba aola baaa baak baal baba babb babo bak- baka bakl bako bala balk ball balo baol bbbb bblb blaa blab blak blkb blob blok bloo boab boak boal boba bobb bobo boka boko bola bolk boll bolo boob book bool k-lo kaaa kaab kaak kaal kaba kabb kabo kaka kakk kako kala kalb kalk kall kalo kaoa kaok kaol kbaa kbab kbak kbal kbba kbbb kbbk kbbl kbbo kbkb kbkk kbkl kbko kbla kblb kbll kblo kboa kbob kbok kboo kkaa kkal kkba kkbb kkbl kkbo kkkk kklb kkll kklo kkoa kkob kkol kkoo klaa klab klak klal klbb klbl klka klkk klkl klko klla kllb kllk kloa klob klok klol kloo koab koak koal koba kobb kobk kobo koka kokb kokk koko kola kolb kolk koll kolo koob kook kool kooo laaa laak laal laba labo laka lala lall lalo lkab lkal llao llll lloa lloo lob- loba lobb lobo loka lokk loko lola loll lolo loob look lool oall obak obal obba obbo obkb obla obok obol okak okka okko okla oklo okok okol olba olbo olka olla ollo ooaa ooak ooba oola oolo oooo