c-- ccc ccd ccn cco ccs cct ccu cdc cdd cdn cdo cds cdt cdu cn- cnc cnd cnn cno cns cnt cnu co- coc cod con coo cos cot cou csc csd csn cso css cst csu ctc ctd ctn cto cts ctt ctu cuc cud cun cuo cus cut cuu dcc dcd dcn dco dcs dct dcu ddc ddd ddn ddo dds ddt ddu dnc dnd dnn dno dns dnt doc dod don doo dos dot dou dsc dsd dsn dso dss dst dsu dtc dtd dtn dto dts dtt dtu duc dud dun duo dus dut ncc ncd ncn nco ncs nct ncu ndc ndd ndn ndo nds ndt ndu nnc nnn nno nns nnt nnu no- noc nod non noo nos not nou nsc nsd nsn nso nss nst nsu ntc ntd ntn nto nts ntt ntu nuc nud nun nuo nus nut nuu oc- occ ocd ocn oco ocs oct ocu odc odd odn odo ods odt odu on- onc ond onn ono ons ont onu oo- ooc ood oon ooo oos oot os- osc osd osn oso oss ost osu ot- otc otd otn oto ots ott otu ou- ouc oud oun ouo ous out scc scd scn sco scs sct scu sdc sdd sdn sdo sds sdt sdu snc snd snn sno sns snt snu soc sod son soo sos sot sou ss- ssc ssd ssn sso sss sst ssu stc std stn sto sts stt stu suc sud sun suo sus sut suu tcc tcd tcn tco tcs tct tcu tdc tdd tdn tdo tds tdt tdu tnc tnd tnn tno tns tnt to- toc tod ton too tos tot tou tsc tsd tsn tso tss tst tsu ttc ttd ttn tto tts ttt ttu tuc tud tun tuo tus tut tuu ucc ucd ucn uco ucs uct ucu udc udd udn udo uds udt udu un- unc und unn uno uns unt unu uoc uod uon uoo uos uot usc usd usn uso uss ust usu utc utd utn uto uts utt utu uuc uun uus uut uuu