a-ak aaaa aaab aaad aaal aaba aabb aabd aabl aada aaka aala aald aall abaa abab abad abak abal abb- abba abbb abda abla adaa adab adad adak adal adba adda addd addl akaa akal akka alaa alad alak alal alb- alba ald- alda aldl alk- alka alkb alkd all- alla alll baaa baad baak baal baba babb bada badb badd bak- baka bakl bala bald balk ball bbad bbbb bbdd bblb blaa blab blad blak blkb blkd daab daad daal daba dabb dada daka dala dalk dall dddd dkba dlab dlbd kaaa kaab kaak kaal kaba kabb kabd kad- kada kadd kadl kaka kakk kala kalb kald kalk kall kbaa kbab kbad kbak kbal kbba kbbb kbbd kbbk kbbl kbdb kbdl kbkb kbkk kbkl kbla kblb kbld kbll kdaa kdab kdad kdak kdal kdbb kdbl kddb kddd kddk kddl kdka kdkb kdkd kdkk kdla kdlb kdld kdll kkaa kkal kkba kkbb kkbd kkbl kkda kkdd kkdl kkkk kklb kkld kkll klaa klab klad klak klal klbb klbd klbl kldd klka klkk klkl klla kllb kllk laaa laad laak laal laba lada ladd laka lala lald lall lkab lkal lldb llll