c-- c-j ccc ccf ccj cck cco ccr ccs cct cfc cff cfk cfo cfr cfs cft cjc cjf cjk cjr cjs ckc cko cks ckt co- coc cof coj cok coo cor cos cot crc crf crj crk cro crr crs crt csc csf csj csk cso csr css cst ctc ctf ctk cto ctr cts ctt fcc fcf fcj fck fco fcr fcs fct ffc fff ffk ffo ffr ffs fft fjc fjs fkc fkf fkj fkk fkt foc fof fok foo for fos fot frc frf frj frk fro frr frs frt fsc fsf fsj fsk fso fsr fss fst ftc ftf ftk fto ftr fts ftt jcc jcf jck jco jcr jcs jct jfc jff jfj jfk jfo jfr jfs jft jjc jjf jjj jjk jjr jjs jkk jko jkr jks jkt joc jof joj jok joo jor jos jot jrc jrf jrk jro jrr jrs jrt jsc jsf jsj jsk jso jsr jss jst jtc jtf jtk jtr jts jtt k-t kcc kck kcr kcs kct kfc kff kfo kfs kjc kjr kjs kkc kkk kkr kks kkt koc kof kok koo kor kos kot krc krf krk kro krr krs krt ksc ksf ksk kso ksr kss kst ktc ktf ktj ktk kto ktr kts ktt oc- occ ocf ocj ock oco ocr ocs oct of- ofc off ofo ofr ofs oft ojc ojo ojs okc okj okk oko okr oks oo- ooc oof ook ooo oor oos oot or- orc orf ork oro orr ors ort os- osc osf osj osk oso osr oss ost ot- otc otf otk oto otr ots ott rcc rcf rcj rco rcr rcs rct rfc rff rfj rfk rfo rfr rfs rft rjc rjf rjk rjr rkc rkf rkk rko rks rkt roc rof roj rok roo ror ros rot rrc rrf rrk rrr rrs rrt rsc rsf rsj rsk rso rsr rss rst rtc rtf rtj rtk rto rtr rts rtt scc scf scj sck sco scr scs sct sfc sff sfj sfk sfo sfr sfs sft sjc sjf sjj sjk sjr sjs sjt sk- skc skf skj skk sko skr sks skt soc sof soj sok soo sor sos sot sr- src srf srj srk sro srr srs srt ss- ssc ssf ssj ssk sso ssr sss sst stc stf stj stk sto str sts stt tcc tcf tcj tck tco tcr tcs tct tfc tff tfj tfk tfo tfr tfs tft tjc tjf tjo tjr tjs tkc tkk tko tkr tks tkt to- toc tof toj tok too tor tos tot trc trf trk tro trr trs trt tsc tsf tsj tsk tso tsr tss tst ttc ttf ttk tto ttr tts ttt