a-ak a-do a-ok aaaa aaab aaad aaal aaba aabb aabd aabl aada aaka aala aald aall aalo aaoo abaa abab abad abak abal abb- abba abbb abbo abda abdo abla ablo aboa abob abod abok abol aboo adaa adab adad adak adal adao adba adda addd addl addo adob adod adok adoo akaa akal akao akka akko aklo akok alaa alad alak alal alao alb- alba albo ald- alda aldl aldo alk- alka alkb alkd alko all- alla alll allo aloa alod alok alol aloo aoba aola baaa baad baak baal baba babb babo bada badb badd bado bak- baka bakl bako bala bald balk ball balo baol bbad bbbb bbdd bbdo bblb blaa blab blad blak blkb blkd blob blod blok bloo boab boad boak boal boba bobb bobo boda bodb bodo boka boko bola bold bolk boll bolo boob bood book bool d-bo daab daad daal daba dabb dabo dada dado daka dako dala dalk dall dalo dddd dkba dlab dlbd doab doak doal doba dobb dobl dod- doda dodd dodo doka doko dola dold dolk doll dolo doob dood dook dool k-lo kaaa kaab kaak kaal kaba kabb kabd kabo kad- kada kadd kadl kado kaka kakk kako kala kalb kald kalk kall kalo kaoa kaok kaol kbaa kbab kbad kbak kbal kbba kbbb kbbd kbbk kbbl kbbo kbdb kbdl kbdo kbkb kbkk kbkl kbko kbla kblb kbld kbll kblo kboa kbob kbod kbok kboo kdaa kdab kdad kdak kdal kdao kdbb kdbl kddb kddd kddk kddl kdka kdkb kdkd kdkk kdko kdla kdlb kdld kdll kdlo kdok kkaa kkal kkba kkbb kkbd kkbl kkbo kkda kkdd kkdl kkdo kkkk kklb kkld kkll kklo kkoa kkob kkol kkoo klaa klab klad klak klal klbb klbd klbl kldd klka klkk klkl klko klla kllb kllk kloa klob klok klol kloo koab koak koal koba kobb kobk kobo koda kodk kodl kodo koka kokb kokk koko kola kolb kold kolk koll kolo koob kook kool kooo laaa laad laak laal laba labo lada ladd lado laka lala lald lall lalo lkab lkal llao lldb llll lloa llod lloo load lob- loba lobb lobo loda loka lokk loko lola lold loll lolo loob lood look lool oall obad obak obal obba obbo obkb obla obok obol odal odbo odda oddd odla odoo okak okka okko okla oklo okok okol olba olbo oldb olka olla ollo ooaa ooak ooba ooda oola oold oolo oooo