-ic c-- ccc ccd cci cco ccp ccr ccs cdc cdd cdi cdo cdp cdr cds ci- cic cid cii cio cip cir cis co- coc cod coi coo cop cor cos cpc cpd cpi cpo cpp cpr cps crc crd cri cro crp crr crs csc csd csi cso csp csr css dcc dcd dci dco dcp dcr dcs ddc ddd ddi ddo ddp ddr dds di- dic did dii dio dip dir dis doc dod doi doo dop dor dos dpc dpd dpi dpo dpp dpr dps drc drd dri dro drp drr drs dsc dsd dsi dso dsp dsr dss i-d icc icd ici ico icp icr ics idc idd idi ido idp idr ids iic iid iii iio iip iir iis io- ioc iod ioi ioo iop ior ios ipc ipd ipi ipo ipp ipr ips ir- irc ird iri iro irp irr irs is- isc isd isi iso isp isr iss o-i oc- occ ocd oci oco ocp ocr ocs odc odd odi odo odp odr ods oic oid oii oio oip oir ois oo- ooc ood ooi ooo oop oor oos op- opc opd opi opo opp opr ops or- orc ord ori oro orp orr ors os- osc osd osi oso osp osr oss p-p pcc pcd pci pco pcp pcr pcs pdc pdd pdi pdo pdp pdr pds pic pid pii pio pip pir pis poc pod poi poo pop por pos ppc ppd ppi ppo ppp ppr pps prc prd pri pro prp prr prs ps- psc psd psi pso psp psr pss rcc rcd rci rco rcp rcr rcs rdc rdd rdi rdo rdp rdr rds ric rid rii rio rip rir ris roc rod roi roo rop ror ros rpc rpd rpi rpo rpp rpr rps rrc rrd rri rrp rrr rrs rsc rsd rsi rso rsp rsr rss scc scd sci sco scp scr scs sdc sdd sdi sdo sdp sdr sds sic sid sii sio sip sir sis soc sod soi soo sop sor sos spc spd spi spo spp spr sps sr- src srd sri sro srp srr srs ss- ssc ssd ssi sso ssp ssr sss