bbbb bbng bbrc bbrg bcbc bcbg bccc bcor bgon bnoc bnor bnrr bobb bobo boco bogg bogo bonc bong bonn bono boob booc boog boon boor bor- borg born boro borr brcb brno brob broc brog bron broo bror brrr c-bo cbbc cbcc cbcn cbcr cbgb cbrn ccbc ccbn cccb cccc ccgc ccnb ccnc ccnr ccob ccoc ccrc ccrg cgcc cgcg cgro cnbc cnco cnrc cnrr cobb cobo coco cogo con- conc cong conn cono coob coon cor- corb corc corg corn coro corr crbc crcc crcr crob croc cron croo cror gbbo gbon gc-c gcbc gccc gcrg gggg ggrn gncc gngc gnoo gnrc gnrr gobo gocr gogo gon- gong gonn gono goog goon goor gorb gorg gorn goro gorr grbr grcc grob groc grog gron groo gror grrr nbbc nbbo nbcc nbco ncbc nccc nccn nccr ncgr ncnc ncoc ncor ncrc ngon ngor nngn nnnn nobc nobo noco nogg nogo non- nong nonn nono noo- noob noon nooo noor nor- norb norc norg norn noro norr nroc nron nrrc obbo obon obor obro ocbc occc occn ocon ocro ocrr ogb ogog ogon ogro onc- onco ongo onno onon onor oocr oooo orbb orbo orco orgn orgo ornc orno oro- oron oror orro rbbb rbbr rcbc rcbo rccb rccc rcgc rcnr rcon rcrg rnbr rnco rob- robb robo rocc roco rogg rogo ronc rong rono roob roog roon roor rorc roro rrrr