a-ak a-ok a-wa aaaa aaab aaac aaar aaas aaba aabb aabc aabw aaca aacb aacc aack aaco aacr aacs aaka aaoo aaow aara aarc aaro aars aasa aasc aass aaww abaa abab abac abak abar abas abaw abb- abba abbb abbo abbr abbs abca abcb abcc abcr abcs abcw aboa abob abok aboo abor abos abow abra abrc abro abrs abs- absa abss absw abwa abwr acaa acab acac acar acas acba acca accc acco accs acks ackw acoa acor acos acow acr- acra acrc acro acrr acrs acsa acsc acss acsw acwa acww akaa akao akar akas akca akka akko akok akos akr- akra aksa akwa aoba aoca aocs aoks aora aorb aors aoss arab arac arak arar aras araw arba arbs arc- arca arco arcs arka arko arks aroa arob aroo aror aros arow arr- arra arrc arrk arro arrr arrs ars- arsa arsc arsk arso arwa asaa asab asac asak asao asar asas asba asbo asc- asca ascb ascc asco ascr ascw aska asko askr asks asob asoc asok asor asos asow asra asrc asro asrs assa assc assk asso assr asss awac awar awas awka awoo awow awro awsk awss awwa awws baaa baak baar baas baba babb babo babr babs bac- baca bacc back baco bacs bak- baka bako bakr baks baos bar- bara barb barc bark baro barr bars basa basc bask baso bass baw- bawk baws bbas bbbb bbbs bbrc bbwc bbwr bbws bcaa bcar bcas bcbc bcbs bcca bccc bccs bcor bcos bcra bcrs bcsa bcsc bcss boab boac boak boar boas boba bobb bobo bobs bobw boca bock boco bocs boka boko boks boob booc book boor boos boow bor- bora bork boro borr bors borw bosa bosc bosk boso boss bowa bowk bowr bows brab brac brak brao bras braw brca brcb brcw brka brkb broa brob broc brok broo bror bros brow brrr brrs brsb brsr bsaa bsac bsas bsaw bscs bsos bsra bssc bwaa bwoc c-bo caaa caab caac caas caba cabo cabs cac- caca cacc cack caco cacr cacw caka caor caos cara carb carc cark caro carr cars casa casb casc cask caso casr cass cawk caws cbac cbar cbbc cbbs cbca cbcc cbcr cbcs cbka cbko cbkr cbsa cbsc cbwa ccaa ccab ccac ccar ccas ccba ccbc ccca cccb cccc cccs cckw ccob ccoc ccow ccra ccrc ccrs ccsa ccss ckac ckbc ckck ckco ckcs ckcw ckoa ckob ckoc ckoo ckor ckos ckrc ckrw cksa cksb ckso cksw ckwr ckws ckww coak coas coba cobb cobo cobs coca cock coco cok- coka coko coob cook coos cor- cora corb corc cork coro corr cors cosa cosc coso coss cows crab crac crar cras craw crbc crca crcc crcr crkc crob croc crok croo cror crow crsa crss csaa csab csac csak csao csar csas cscb cscc csco cscr cscs cska csks csob csor csos csra csrc csrs cssa cssr cswk csws cwac cwos cwrw k-os kaaa kaab kaak kaar kaas kaba kabb kabc kabo kabr kabw kacb kacc kaco kacs kacw kaka kakc kakk kako kaks kaoa kaoc kaok kaor kaos kaow kara karb kark karo karr kars karw kas- kasa kasb kasc kask kaso kasr kass kasw kaw- kawa kawc kawk kawo kaws kaww kbaa kbab kbac kbak kbar kbas kbba kbbb kbbc kbbk kbbo kbbr kbbs kbbw kbca kbcb kbck kbco kbcr kbcs kbcw kbkb kbkk kbko kbkr kbkw kboa kbob kboc kbok kboo kbos kbow kbra kbrb kbrc kbrk kbro kbrw kbsa kbsb kbsk kbso kbsr kbss kbsw kbwa kbwb kbwc kbww kcaa kcab kcac kcar kcas kcaw kcba kcbc kcbk kcbr kcbs kcbw kcca kccb kccc kcck kccr kckc kckk kcko kckr kcob kcor kcos kcow kcrc kcro kcrr kcrs kcrw kcsa kcsb kcsc kcsr kcss kcwa kcwb kcwc kcwk kcwr kkaa kkac kkar kkaw kkba kkbb kkbo kkbr kkbs kkcb kkck kkco kkcr kkcs kkcw kkkk kkoa kkob kkoo kkor kkow kkrb kkrc kkrk kkro kkrr kkrs kksa kksr kkss kksw kkwb kkwk kkws koab koac koak koar koas koba kobb kobc kobk kobo kobr kobs koca kocb kock kocs kocw koka kokb kokc kokk koko kokr koks koob kooc kook kooo koor koos kora korb korc kork koro korr kors kos- kosa kosb kosc koso kosr koss kowa kowb kowr krab krac krak krar kras kraw krba krbb krbk krbr krbw krca krcb krcc krco krcs krcw krka krkc krkk krko krkr krks krkw kroa krob kroc krok kroo kror kros krow krrb krrc krrk krro krrr krrs krrw krsa krsc krsk krsr krss krsw krwa krwb krwc krwk krwr ksab ksac ksak ksar ksas ksaw ksba ksbc ksbr ksbs ksbw ksca kscb ksck ksco kscr kscs kska kskb kskk ksko kskr ksks ksob ksoc ksok ksoo ksor ksos ksow ksra ksrb ksro ksrr ksrs ksrw kssa ksso kssr ksss kswa kswb kswc kswo ksws ksww kwab kwac kwak kwar kwaw kwbc kwbw kwca kwck kwcr kwka kwkb kwkc kwkk kwkr kwkw kwoa kwoc kwok kwor kwos kwow kwrb kwrk kwro kwrr kwrs kwrw kwsa kwsc kwsk kwso kwss kwsw kwwk kwwr kwws oaks oara oars oasc oass obak obas obba obbo obkb obok obor obos obra obro obsr obss ocab ocac ocak ocas ocbc occa occc ocks ocos ocra ocro ocrr ocrs ocsa ocsw okak okas okka okko okok okor okra okro oksa okso ooaa ooak ooba oocr oooo ooos oora oosa orab orac orak orao orar oras orba orbb orbo orbs orca orco orcs orka orko oro- orok oror oros orra orro orrs orsa orsk orso orwa orwo osak osar osas osba osca oscc osco osoo osor osos osow osro ossa ossb osso owar owow owsa owwa raab raak raas raba rabb rabk rabo rabs rac- raca racc rack raco racs raka rakk raob raoc raok raos rara rarb rark raro rars rasa rasc rask raso rass rawa rawk rawr raws raww rbbb rbbr rbbs rbss rcac rcas rcbc rcbo rccb rccc rccs rcos rcsa rcsc rcss rkos rkss roab roak roar roas rob- roba robb robo