bbbb bbch bbrc bbrg bcbc bcbg bccc bcor bhcc bhog bhor bobb bobo boch boco bogg bogh bogo boho bohr boob booc boog booh boor bor- borg borh boro borr brcb brob broc brog broh broo bror brrr c-bo cbbc cbcc cbcr cbgb cbrh ccbc cccb cccc ccgc cchr ccob ccoc ccrc ccrg cgcc cgcg cgro chch chgb choc choh choo chor chrb chrc chro chrr cobb cobh cobo coch coco cogh cogo coho coob cooh cor- corb corc corg coro corr crbc crcc crcr crob croc croh croo cror gbbo gc-c gcbc gccc gcrg gggg gghg gobo goch gocr gogh gogo gohb goog goor gorb gorg goro gorr grbr grcc grob groc grog groh groo gror grrr hboc hcbc hccb hccc hcch hcgh hggc hhgg hhhh hobo hoch hocr hogg hogh hogo hoho hoor horc horg horo horr hrob hrrc obbo obor obrh obro ocbc occc ocro ocrr ogb ogog ogro ohcc ohgr ohho ohob ohoh oocr ooho oooh oooo orbb orbo orch orco orgo oro- oror orro rbbb rbbr rbgh rboh rcbc rcbo rccb rccc rcgc rchb rcrg rhbg rhcg rhob rhoc rhog rhoh rob- robb robo rocc roch roco rogg rogh rogo rohr roob roog roor rorc roro rrrr