-ic c-- ccc cci cco ccp ccs cct ci- cic cii cio cip cis cit co- coc coi coo cop cos cot cpc cpi cpo cpp cps cpt csc csi cso csp css cst ctc cti cto ctp cts ctt icc ici ico icp ics ict iic iii iio iip iis iit io- ioc ioi ioo iop ios iot ipc ipi ipo ipp ips ipt is- isc isi iso isp iss ist itc iti ito itp its itt o-i oc- occ oci oco ocp ocs oct oic oii oio oip ois oit oo- ooc ooi ooo oop oos oot op- opc opi opo opp ops opt os- osc osi oso osp oss ost ot- otc oti oto otp ots ott p-p pcc pci pco pcp pcs pct pic pii pio pip pis pit poc poi poo pop pos pot ppc ppi ppo ppp pps ppt ps- psc psi pso psp pss pst pt- ptc pti pto ptp pts ptt scc sci sco scp scs sct sic sii sio sip sis sit soc soi soo sop sos sot spc spi spo spp sps spt ss- ssc ssi sso ssp sss sst stc sti sto stp sts stt tcc tci tco tcp tcs tct tic tii tio tip tis tit to- toc toi too top tos tot tpc tpi tpo tpp tps tpt tsc tsi tso tsp tss tst ttc tti tto ttp tts ttt