-ic c-- ccc ccd cci cco ccp ccs cct cdc cdd cdi cdo cdp cds cdt ci- cic cid cii cio cip cis cit co- coc cod coi coo cop cos cot cpc cpd cpi cpo cpp cps cpt csc csd csi cso csp css cst ctc ctd cti cto ctp cts ctt dcc dcd dci dco dcp dcs dct ddc ddd ddi ddo ddp dds ddt di- dic did dii dio dip dis dit doc dod doi doo dop dos dot dpc dpd dpi dpo dpp dps dpt dsc dsd dsi dso dsp dss dst dtc dtd dti dto dtp dts dtt i-d icc icd ici ico icp ics ict idc idd idi ido idp ids idt iic iid iii iio iip iis iit io- ioc iod ioi ioo iop ios iot ipc ipd ipi ipo ipp ips ipt is- isc isd isi iso isp iss ist itc itd iti ito itp its itt o-i oc- occ ocd oci oco ocp ocs oct odc odd odi odo odp ods odt oic oid oii oio oip ois oit oo- ooc ood ooi ooo oop oos oot op- opc opd opi opo opp ops opt os- osc osd osi oso osp oss ost ot- otc otd oti oto otp ots ott p-p pcc pcd pci pco pcp pcs pct pdc pdd pdi pdo pdp pds pdt pic pid pii pio pip pis pit poc pod poi poo pop pos pot ppc ppd ppi ppo ppp pps ppt ps- psc psd psi pso psp pss pst pt- ptc ptd pti pto ptp pts ptt scc scd sci sco scp scs sct sdc sdd sdi sdo sdp sds sdt sic sid sii sio sip sis sit soc sod soi soo sop sos sot spc spd spi spo spp sps spt ss- ssc ssd ssi sso ssp sss sst stc std sti sto stp sts stt tcc tcd tci tco tcp tcs tct tdc tdd tdi tdo tdp tds tdt tic tid tii tio tip tis tit to- toc tod toi too top tos tot tpc tpd tpi tpo tpp tps tpt tsc tsd tsi tso tsp tss tst ttc ttd tti tto ttp tts ttt