-ic c-- ccc ccf cci cck cco ccp ccs cfc cff cfi cfk cfo cfp cfs ci- cic cif cii cik cio cip cis ckc cki cko cks co- coc cof coi cok coo cop cos cpc cpf cpi cpk cpo cpp cps csc csf csi csk cso csp css fcc fcf fci fck fco fcp fcs ffc fff ffi ffk ffo ffp ffs fic fif fii fik fip fis fkc fkf fki fkk fkp foc fof foi fok foo fop fos fpc fpi fpk fpo fpp fps fsc fsf fsi fsk fso fsp fss i-f icc icf ici ick ico icp ics ifc iff ifi ifo ifp ifs iic iif iii iio iip iis ikc ikf iki ikk iko iks io- ioc iof ioi ioo iop ios ipc ipf ipi ipo ipp ips is- isc isf isi isk iso isp iss kcc kci kck kcp kcs kfc kff kfi kfo kfs kic kif kii kik kio kip kis kkc kki kkk kkp kks koc kof koi kok koo kop kos kpc kpf kpi kpk kpo kpp kps ksc ksf ksi ksk kso ksp kss o-i oc- occ ocf oci ock oco ocp ocs of- ofc off ofi ofo ofp ofs oic oif oii oik oio oip ois okc oki okk oko okp oks oo- ooc oof ooi ook ooo oop oos op- opc opf opi opk opo opp ops os- osc osf osi osk oso osp oss p-p pcc pcf pci pck pco pcp pcs pfc pff pfi pfk pfo pfp pfs pic pif pii pik pio pip pis pkc pkf pki pko pkp pks poc pof poi pok poo pop pos ppc ppf ppi ppk ppo ppp pps ps- psc psf psi psk pso psp pss scc scf sci sck sco scp scs sfc sff sfi sfk sfo sfp sfs sic sif sii sik sio sip sis sk- skc skf ski skk sko skp sks soc sof soi sok soo sop sos spc spf spi spk spo spp sps ss- ssc ssf ssi ssk sso ssp sss