bbb bbc bbd bbk bbn bbo bcb bcc bcd bck bcn bco bdb bdc bdd bdk bdo bkb bkc bkk bkn bko bnb bnc bnd bnk bnn bno bob boc bod bok bon boo c-- cbb cbc cbd cbk cbn cbo ccb ccc ccd cck ccn cco cdb cdc cdd cdk cdn cdo ckb ckc ckd cko cn- cnb cnc cnd cnn cno co- cob coc cod cok con coo dbb dbc dbd dbk dbn dbo dcb dcc dcd dck dcn dco ddb ddc ddd ddk ddn ddo dkb dkc dkk dko dnb dnc dnd dnk dnn dno dob doc dod dok don doo kbb kbc kbd kbk kbn kbo kcb kcc kcd kck kcn kdb kdc kdk kdo kkb kkc kkk kkn kn- knc knd knk knn kno kob koc kod kok kon koo nbb nbc nbd nbk nbn nbo ncb ncc ncd nck ncn nco ndb ndc ndd ndk ndn ndo nkc nkk nkn nko nnb nnc nnk nnn nno no- nob noc nod nok non noo ob- obb obc obd obk obn obo oc- ocb occ ocd ock ocn oco odb odc odd odn odo okb okc okd okk oko on- onb onc ond onk onn ono oo- oob ooc ood ook oon ooo

bbbb bbdd bbdo bcbc bccc bdbc bddc bnoc bobb bobo bock boco bodb bodo bokn boko bonc bond bonk bonn bono boob booc bood book boon c-bo c-cd cbbc cbcc cbcn cbdb cbdc cbdn cbdo cbkn cbko cbnd ccbc ccbn cccb cccc ccdc ccdn ccnb ccnc ccob ccoc ccod cddb cdnb cdnc cdon ckbc ckck ckco ckdo cknb cknc ckob ckoc ckoo cnbc cnco cndd cobb cobo cock coco codd cok- coko con- conc cond conk conn cono coob cood cook coon d-bo dbcc dcbc dccb dccc dcdb dcon dddd ddoc dkdc dnoc dobb dock doco dod- dodd dodo doko donc dond donk donn dono doob dood dook doon kbbb kbbc kbbd kbbk kbbo kbcb kbck kbco kbdb kbdn kbdo kbkb kbkk kbko kbnd kbnn kbno kbob kboc kbod kbok kbon kboo kcbc kcbd kcbk kccb kccc kccd kcck kcdc kcdd kckc kckk kckn kcko kcnb kcnd kcno kcob kcon kdbb kdbn kdcc kdcd kdco kddb kddc kddd kddk kdkb kdkd kdkk kdkn kdko kdnd kdnk kdnn kdno kdoc kdok kkbb kkbd kkbn kkbo kkcb kkcd kkck kkcn kkco kkdc kkdd kkdo kkkk kknb kknd kknn kkno kkob kkon kkoo knbb knbc knbn kncb knck kncn knco kndb kndc kndd kndk kndn kndo knkk knnb knnd knnk knob knoc knod knok knon kobb kobc kobk kobn kobo kocb kocd kock kocn kodk kodo kokb kokc kokk kokn koko konc kond konk kono koob kooc kook koon kooo nbbc nbbo nbcc nbco ncbc nccc nccn ncdc ncdn ncnc ncnd ncoc ndcc nddb nddo ndoc nkok nndb nnnn nobc nobo nock noco nodo noko non- nonn nono noo- noob nook noon nooo obbo obkb obok obon ocbc occc occn ocon odbo oddd odnb odon odoo okko okno okok okon onc- oncd onco ondo onno onod onon oooo

bbook bckdk bcock bo-bo bobko boboc bobok bocon bodd- bodoc bokko bokod bokok bondo bonon boock booco booko boond boonk ccccc cnnnn co-bo co-co cocc- cocco cocon codco codo codon cokk- conck conco condo cono- conob conon d-con dconn ddddd do-do dobok dodon dodoo dokdo donck dondo donon doodo k-b-d knock knokk ko-ko kocon kodok kokko kondo konno nnooo no-do no-no nobob nokko nokon nondo nonno o-bon obock obodo okobo okoc onco- onnbc onond onoon ooooo

bbbbbb boccob bocock bocono bodock bodoco bonbon bondon bonobo booboo cobbob cocco- cococo cocoon concon condon connon conoco coocoo coodoo cookoo d-book docock dododo dok-do dondon knock- kobodo koboko kodkod kokoon koodoo kookoo nkonko no-doc nodock non-no noncon nonkon nonodd nonono nonoon noonoo o-knon okondo onbook oooooo

bbbbbbb bok-bok bokonon bon-bon boo-boo boobook boocock bookcon bookdoc cokodok connock conodon dob-dob docbook docodon donodon doo-doo knockon kokocko kooddoo noddock non-con nonbook noncook

bbbbbbbb bo-bo-bo boconnoc bonobono bookboon coboconk cookbook knock-on no-knock nokonoko nononono

ddddddddd dokkodo

bonnbonbon bonobonono knockknock

knock-knock

bonbonbooboo

bbbbbbbbbbbbbbb ccccccccccccccc doodoodoodoodoo