-ic c-- ccc ccd cci ccp ccs cdc cdd cdi cdp cds ci- cic cid cii cip cis cpc cpd cpi cpp cps csc csd csi csp css dcc dcd dci dcp dcs ddc ddd ddi ddp dds di- dic did dii dip dis dpc dpd dpi dpp dps dsc dsd dsi dsp dss i-d icc icd ici icp ics idc idd idi idp ids iic iid iii iip iis ipc ipd ipi ipp ips is- isc isd isi isp iss p-p pcc pcd pci pcp pcs pdc pdd pdi pdp pds pic pid pii pip pis ppc ppd ppi ppp pps ps- psc psd psi psp pss scc scd sci scp scs sdc sdd sdi sdp sds sic sid sii sip sis spc spd spi spp sps ss- ssc ssd ssi ssp sss