-ic c-- ccc ccd cci cco ccp ccs cdc cdd cdi cdo cdp cds ci- cic cid cii cio cip cis co- coc cod coi coo cop cos cpc cpd cpi cpo cpp cps csc csd csi cso csp css dcc dcd dci dco dcp dcs ddc ddd ddi ddo ddp dds di- dic did dii dio dip dis doc dod doi doo dop dos dpc dpd dpi dpo dpp dps dsc dsd dsi dso dsp dss i-d icc icd ici ico icp ics idc idd idi ido idp ids iic iid iii iio iip iis io- ioc iod ioi ioo iop ios ipc ipd ipi ipo ipp ips is- isc isd isi iso isp iss o-i oc- occ ocd oci oco ocp ocs odc odd odi odo odp ods oic oid oii oio oip ois oo- ooc ood ooi ooo oop oos op- opc opd opi opo opp ops os- osc osd osi oso osp oss p-p pcc pcd pci pco pcp pcs pdc pdd pdi pdo pdp pds pic pid pii pio pip pis poc pod poi poo pop pos ppc ppd ppi ppo ppp pps ps- psc psd psi pso psp pss scc scd sci sco scp scs sdc sdd sdi sdo sdp sds sic sid sii sio sip sis soc sod soi soo sop sos spc spd spi spo spp sps ss- ssc ssd ssi sso ssp sss