c-- ccc ccd ccn cco ccr ccs cct cdc cdd cdn cdo cdr cds cdt cn- cnc cnd cnn cno cnr cns cnt co- coc cod con coo cor cos cot crc crd crn cro crr crs crt csc csd csn cso csr css cst ctc ctd ctn cto ctr cts ctt dcc dcd dcn dco dcr dcs dct ddc ddd ddn ddo ddr dds ddt dnc dnd dnn dno dnr dns dnt doc dod don doo dor dos dot drc drd drn dro drr drs drt dsc dsd dsn dso dsr dss dst dtc dtd dtn dto dtr dts dtt ncc ncd ncn nco ncr ncs nct ndc ndd ndn ndo ndr nds ndt nnc nnn nno nns nnt no- noc nod non noo nor nos not nrc nrd nrn nro nrr nrs nrt nsc nsd nsn nso nsr nss nst ntc ntd ntn nto ntr nts ntt oc- occ ocd ocn oco ocr ocs oct odc odd odn odo odr ods odt on- onc ond onn ono onr ons ont oo- ooc ood oon ooo oor oos oot or- orc ord orn oro orr ors ort os- osc osd osn oso osr oss ost ot- otc otd otn oto otr ots ott rcc rcd rcn rco rcr rcs rct rdc rdd rdn rdo rdr rds rdt rnc rnd rnn rno rnr rns rnt roc rod ron roo ror ros rot rrc rrd rrn rrr rrs rrt rsc rsd rsn rso rsr rss rst rtc rtd rtn rto rtr rts rtt scc scd scn sco scr scs sct sdc sdd sdn sdo sdr sds sdt snc snd snn sno snr sns snt soc sod son soo sor sos sot sr- src srd srn sro srr srs srt ss- ssc ssd ssn sso ssr sss sst stc std stn sto str sts stt tcc tcd tcn tco tcr tcs tct tdc tdd tdn tdo tdr tds tdt tnc tnd tnn tno tnr tns tnt to- toc tod ton too tor tos tot trc trd trn tro trr trs trt tsc tsd tsn tso tsr tss tst ttc ttd ttn tto ttr tts ttt