c-- ccc ccd cce cck ccn ccs cct cdc cdd cde cdk cdn cds cdt ce- cec ced cee cek cen ces cet ckc ckd cks ckt cn- cnc cnd cne cnn cns cnt csc csd cse csk csn css cst ctc ctd cte ctk ctn cts ctt dcc dcd dce dck dcn dcs dct ddc ddd dde ddk ddn dds ddt de- dec ded dee dek den des det dkc dke dkk dks dkt dnc dnd dne dnk dnn dns dnt dsc dsd dse dsk dsn dss dst dtc dtd dte dtk dtn dts dtt ec- ecc ecd ece eck ecn ecs ect ed- edc edd ede edk edn eds edt eec eed eee eek een ees eet ekc ekd eke eks ekt en- enc end ene enk enn ens ent es- esc esd ese esk esn ess est etc etd ete etk etn ets ett k-t kcc kcd kce kck kcn kcs kct kdc kde kdk kds kdt ke- kec ked kee kek ken kes ket kkc kke kkk kkn kks kkt kn- knc knd kne knk knn knt ksc ksd kse ksk ksn kss kst ktc kte ktk ktn kts ktt ncc ncd nce nck ncn ncs nct ndc ndd nde ndk ndn nds ndt ne- nec ned nee nek nen nes net nkc nke nkk nkn nks nkt nnc nne nnk nnn nns nnt nsc nsd nse nsk nsn nss nst ntc ntd nte ntk ntn nts ntt scc scd sce sck scn scs sct sdc sdd sde sdk sdn sds sdt se- sec sed see sek sen ses set sk- skc skd ske skk sks skt snc snd sne snk snn sns snt ss- ssc ssd sse ssk ssn sss sst stc std ste stk stn sts stt tcc tcd tce tck tcn tcs tct tdc tdd tde tdk tdn tds tdt te- tec ted tee tek ten tes tet tkc tke tkk tks tkt tnc tnd tne tnk tnn tns tnt tsc tsd tse tsk tsn tss tst ttc ttd tte ttk ttn tts ttt