-ic c-- ccc ccd cce cci ccp ccs cdc cdd cde cdi cdp cds ce- cec ced cee cei cep ces ci- cic cid cie cii cip cis cpc cpd cpe cpi cpp cps csc csd cse csi csp css dcc dcd dce dci dcp dcs ddc ddd dde ddi ddp dds de- dec ded dee dei dep des di- dic did die dii dip dis dpc dpd dpe dpi dpp dps dsc dsd dse dsi dsp dss ec- ecc ecd ece eci ecs ed- edc edd ede edi edp eds eec eed eee eep ees eic eid eie eii eip eis ep- epc epd epe epi epp eps es- esc esd ese esi esp ess i-d icc icd ice ici icp ics idc idd ide idi idp ids ie- iec ied iee iei iep ies iic iid iie iii iip iis ipc ipd ipe ipi ipp ips is- isc isd ise isi isp iss p-p pcc pcd pce pci pcp pcs pdc pdd pde pdi pdp pds pec ped pee pei pep pes pic pid pie pii pip pis ppc ppd ppe ppi ppp pps ps- psc psd pse psi psp pss scc scd sce sci scp scs sdc sdd sde sdi sdp sds se- sec sed see sei sep ses sic sid sie sii sip sis spc spd spe spi spp sps ss- ssc ssd sse ssi ssp sss