b-p bbb bbc bbn bbp bbs bcb bcc bcn bcp bcs bnb bnc bnn bnp bns bpb bpc bpn bpp bps bsb bsc bsn bsp bss c-- cbb cbc cbn cbp cbs ccb ccc ccn ccp ccs cn- cnb cnc cnn cnp cns cpb cpc cpn cpp cps csb csc csn csp css nbb nbc nbn nbp nbs ncb ncc ncn ncp ncs nnb nnc nnn nnp nns npb npc npn npp nps nsb nsc nsn nsp nss p-p pbb pbc pbn pbp pbs pcb pcc pcn pcp pcs pn- pnb pnc pnn pnp pns ppb ppc ppn ppp pps ps- psb psc psn psp pss sbb sbc sbn sbp sbs scb scc scn scp scs snb snc snn snp sns spb spc spn spp sps ss- ssb ssc ssn ssp sss