-ic c-- ccc cci cck cco ccp ccs cct ci- cic cii cik cio cip cis cit ckc cki cko cks ckt co- coc coi cok coo cop cos cot cpc cpi cpk cpo cpp cps cpt csc csi csk cso csp css cst ctc cti ctk cto ctp cts ctt icc ici ick ico icp ics ict iic iii iio iip iis iit ikc iki ikk iko iks ikt io- ioc ioi ioo iop ios iot ipc ipi ipo ipp ips ipt is- isc isi isk iso isp iss ist itc iti itk ito itp its itt k-t kcc kci kck kcp kcs kct kic kii kik kio kip kis kit kkc kki kkk kkp kks kkt koc koi kok koo kop kos kot kpc kpi kpk kpo kpp kps kpt ksc ksi ksk kso ksp kss kst ktc ktk kto ktp kts ktt o-i oc- occ oci ock oco ocp ocs oct oic oii oik oio oip ois oit okc oki okk oko okp oks oo- ooc ooi ook ooo oop oos oot op- opc opi opk opo opp ops opt os- osc osi osk oso osp oss ost ot- otc oti otk oto otp ots ott p-p pcc pci pck pco pcp pcs pct pic pii pik pio pip pis pit pkc pki pko pkp pks pkt poc poi pok poo pop pos pot ppc ppi ppk ppo ppp pps ppt ps- psc psi psk pso psp pss pst pt- ptc pti ptk pto ptp pts ptt scc sci sck sco scp scs sct sic sii sik sio sip sis sit sk- skc ski skk sko skp sks skt soc soi sok soo sop sos sot spc spi spk spo spp sps spt ss- ssc ssi ssk sso ssp sss sst stc sti stk sto stp sts stt tcc tci tck tco tcp tcs tct tic tii tik tio tip tis tit tkc tkk tko tkp tks tkt to- toc toi tok too top tos tot tpc tpi tpk tpo tpp tps tpt tsc tsi tsk tso tsp tss tst ttc tti ttk tto ttp tts ttt