bbbb bbbs bcbc bcbs bccc bccs bcos bcsc bcsn bcss bnoc bnss bobb bobo bobs boco bocs bonc bonn bono bons boob booc boon boos bosc bosn boso boss bscs bsns bson bsos bssc c-bo cbbc cbbs cbcc cbcn cbcs cbsc cbsn ccbc ccbn cccb cccc cccs ccnb ccnc ccns ccob ccoc ccsn ccss cnbc cnco cnss cobb cobo cobs coco con- conc conn cono cons coob coon coos cosc coso coss cscb cscc csco cscs csob csos nbbc nbbo nbcc nbco nbcs ncbc ncbs nccc nccn nccs ncnc ncoc ncos ncsc ncss nnnn nnos nnss nobc nobo nobs noco nocs non- nonn nono nons noo- noob noon nooo noos nos- noss nsbo nscc nscs nsos nssb nssc nsso nsss obbo obon obos obsn obss ocbc occc occn ocon ocos onc- onco onno onon onos onsc onso oons oooo ooos oscc osco osno osoo osos ossb osso s-os sbbs sbcc sbcs sccc sccs scob scon scoo scsc scsn scso sncc snco snns snob snoc snoo snos sobo sobs soco socs son- sono sons soon soos soso soss ssbn sscc sscs ssns ssoc sssb sssc ssss