bbb bbc bbk bbn bbo bcb bcc bck bcn bco bkb bkc bkk bkn bko bnb bnc bnk bnn bno bob boc bok bon boo c-- cbb cbc cbk cbn cbo ccb ccc cck ccn cco ckb ckc cko cn- cnb cnc cnn cno co- cob coc cok con coo kbb kbc kbk kbn kbo kcb kcc kck kcn kkb kkc kkk kkn kn- knc knk knn kno kob koc kok kon koo nbb nbc nbk nbn nbo ncb ncc nck ncn nco nkc nkk nkn nko nnb nnc nnk nnn nno no- nob noc nok non noo ob- obb obc obk obn obo oc- ocb occ ock ocn oco okb okc okk oko on- onb onc onk onn ono oo- oob ooc ook oon ooo

bbbb bcbc bccc bnoc bobb bobo bock boco bokn boko bonc bonk bonn bono boob booc book boon c-bo cbbc cbcc cbcn cbkn cbko ccbc ccbn cccb cccc ccnb ccnc ccob ccoc ckbc ckck ckco cknb cknc ckob ckoc ckoo cnbc cnco cobb cobo cock coco cok- coko con- conc conk conn cono coob cook coon kbbb kbbc kbbk kbbo kbcb kbck kbco kbkb kbkk kbko kbnn kbno kbob kboc kbok kbon kboo kcbc kcbk kccb kccc kcck kckc kckk kckn kcko kcnb kcno kcob kcon kkbb kkbn kkbo kkcb kkck kkcn kkco kkkk kknb kknn kkno kkob kkon kkoo knbb knbc knbn kncb knck kncn knco knkk knnb knnk knob knoc knok knon kobb kobc kobk kobn kobo kocb kock kocn kokb kokc kokk kokn koko konc konk kono koob kooc kook koon kooo nbbc nbbo nbcc nbco ncbc nccc nccn ncnc ncoc nkok nnnn nobc nobo nock noco noko non- nonn nono noo- noob nook noon nooo obbo obkb obok obon ocbc occc occn ocon okko okno okok okon onc- onco onno onon oooo

bbook bcock bo-bo bobko boboc bobok bocon bokko bokok bonon boock booco booko boonk ccccc cnnnn co-bo co-co cocc- cocco cocon cokk- conck conco cono- conob conon knock knokk ko-ko kocon kokko konno nnooo no-no nobob nokko nokon nonno o-bon obock okobo okoc onco- onnbc onoon ooooo

bbbbbb boccob bocock bocono bonbon bonobo booboo cobbob cocco- cococo cocoon concon connon conoco coocoo cookoo knock- koboko kokoon kookoo nkonko non-no noncon nonkon nonono nonoon noonoo o-knon onbook oooooo

bbbbbbb bok-bok bokonon bon-bon boo-boo boobook boocock bookcon connock knockon kokocko non-con nonbook noncook

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

bonnbonbon bonobonono knockknock

knock-knock

bonbonbooboo

bbbbbbbbbbbbbbb ccccccccccccccc