b-p bbb bbc bbd bbp bbs bcb bcc bcd bcp bcs bdb bdc bdd bdp bds bpb bpc bpd bpp bps bsb bsc bsd bsp bss c-- cbb cbc cbd cbp cbs ccb ccc ccd ccp ccs cdb cdc cdd cdp cds cpb cpc cpd cpp cps csb csc csd csp css dbb dbc dbd dbp dbs dcb dcc dcd dcp dcs ddb ddc ddd ddp dds dpb dpc dpd dpp dps dsb dsc dsd dsp dss p-p pbb pbc pbd pbp pbs pcb pcc pcd pcp pcs pdb pdc pdd pdp pds ppb ppc ppd ppp pps ps- psb psc psd psp pss sbb sbc sbd sbp sbs scb scc scd scp scs sdb sdc sdd sdp sds spb spc spd spp sps ss- ssb ssc ssd ssp sss