-wal a-ak a-wa aaaa aaab aaac aaal aaba aabb aabc aabl aabw aaca aacb aacc aack aacl aaka aala aalc aall aaww abaa abab abac abak abal abaw abb- abba abbb abca abcb abcc abcl abcw abla abwa acaa acab acac acba acbl acca accc ackw acla aclc acwa acwl acww akaa akal akca akka akwa alaa alac alak alal alaw alb- alba albc alca alcc alk- alka alkb all- alla alll alwc awac awal awka awwa baaa baak baal baba babb bac- baca bacc back bak- baka bakl bala balc balk ball baw- bawk bawl bbbb bblb bbwc bcaa bcbc bcca bccc bccl blaa blab blac blak blaw blkb blw- bwaa caaa caab caac caal caba cac- caca cacc cack cacw caka cala calc calk call calw cawk cawl cbac cbal cbbc cbca cbcc cbcl cbka cbkl cblb cblc cbwa ccaa ccab ccac ccba ccbc ccca cccb cccc cccl cckw ccla cclc ckac ckbc ckck ckcl ckcw cklw ckww clab claw cwac cwbl cwla kaaa kaab kaak kaal kaba kabb kabc kabw kacb kacc kacl kacw kaka kakc kakk kala kalb kalc kalk kall kalw kaw- kawa kawc kawk kawl kaww kbaa kbab kbac kbak kbal kbba kbbb kbbc kbbk kbbl kbbw kbca kbcb kbck kbcl kbcw kbkb kbkk kbkl kbkw kbla kblb kbll kbwa kbwb kbwc kbww kcaa kcab kcac kcal kcaw kcba kcbc kcbk kcbl kcbw kcca kccb kccc kcck kccl kckc kckk kckl kcla kclc kclk kcll kclw kcwa kcwb kcwc kcwk kcwl kkaa kkac kkal kkaw kkba kkbb kkbl kkcb kkck kkcl kkcw kkkk kklb kklc kkll kkwb kkwk klaa klab klac klak klal klaw klbb klbc klbl klbw klca klcb klcc klck klcl klcw klka klkc klkk klkl klla kllb kllc kllk klwa klwb klwl kwab kwac kwak kwal kwaw kwbc kwbw kwca kwck kwka kwkb kwkc kwkk kwkw kwla kwlc kwlk kwwk kwwl laaa laac laak laal laba laca lacc lack lacl laka lala lall lawa lawk lawl lbcc lcac lcaw lcbc lcca lccc lkab lkal llcc lllc llll waaa waac waal waaw waba wabb wabc wabk wabl wabw waca wacb wacc wack wacl waka wakb wakk wakl wakw wala walb walc walk wall wawa wawb wawc wawk wawl wbaa wbab wbac wbak wbal wbbb wbbk wbbl wbbw wbca wbcb wbck wbcl wbcw wbka wbkb wbkk wbkl wbkw wblb wblc wblk wbll wblw wbwb wbwc wbwl wcab wcal wcba wcbc wcbl wcbw wcca wccb wccc wcck wccl wccw wcka wckb wckk wckl wckw wcla wclb wclc wclk wcll wclw wcwa wcwb wcwc wkaa wkac wkak wkal wkba wkbc wkbk wkbl wkbw wkca wkcb wkcl wkcw wkkb wkkc wkkl wkkw wkla wklb wklk wkll wkwc wkwl wlaa wlab wlac wlak wlaw wlbb wlbc wlbk wlbl wlbw wlca wlcc wlck wlcl wlka wlkb wlkk wlkl wlkw wlla wlll wllw wlwc wlwk wlwl wwab wwac wwba wwbb wwbc wwbl wwca wwcb wwck wwcl wwcw wwka wwkb wwkc wwkl wwlb wwlc wwlk wwll wwlw wwwa wwwc wwwk wwwl wwww