b-p bbb bbc bbf bbg bbp bcb bcc bcf bcg bcp bfb bfc bff bfg bfp bgb bgc bgf bgg bgp bpb bpc bpf bpg bpp c-- cbb cbc cbf cbg cbp ccb ccc ccf ccg ccp cfb cfc cff cfg cfp cgb cgc cgg cgp cpb cpc cpf cpg cpp fbb fbc fbf fbg fbp fcb fcc fcf fcg fcp ffc fff ffg ffp fgb fgc fgf fgg fgp fpb fpc fpg fpp g-p gbc gbf gbg gbp gcb gcc gcf gcg gcp gfb gfc gff gfp ggb ggc ggg ggp gpb gpc gpf gpg gpp p-p pbb pbc pbf pbg pbp pcb pcc pcf pcg pcp pfb pfc pff pfg pfp pgb pgc pgf pgg pgp ppb ppc ppf ppg ppp