c-- ccc ccd ccl ccr ccs cdc cdd cdl cdr cds cl- clc cld cll clr cls crc crd crl crr crs csc csd csl csr css dcc dcd dcl dcr dcs ddc ddd ddl ddr dds dl- dlc dld dll dlr dls drc drd drl drr drs dsc dsd dsl dsr dss lcc lcd lcl lcr lcs ldc ldd ldl ldr lds llc lld lll llr lls lrc lrd lrr lrs lsc lsd lsl lsr lss rcc rcd rcl rcr rcs rdc rdd rdl rdr rds rlc rld rll rlr rls rrc rrd rrl rrr rrs rsc rsd rsl rsr rss scc scd scl scr scs sdc sdd sdl sdr sds slc sld sll slr sls sr- src srd srl srr srs ss- ssc ssd ssl ssr sss