bbbb bbrg bhog bhor bobb bobo bogg bogh bogo boho bohr boob boog booh boor bor- borg borh boro borr brob brog broh broo bror brrr gbbo gggg gghg gobo gogh gogo gohb goog goor gorb gorg goro gorr grbr grob grog groh groo gror grrr hhgg hhhh hobo hogg hogh hogo hoho hoor horg horo horr hrob obbo obor obrh obro ogb ogog ogro ohgr ohho ohob ohoh ooho oooh oooo orbb orbo orgo oro- oror orro rbbb rbbr rbgh rboh rhbg rhob rhog rhoh rob- robb robo rogg rogh rogo rohr roob roog roor roro rrrr