c-- ccc ccd ccf ccn cco ccs ccu cdc cdd cdf cdn cdo cds cdu cfc cfd cff cfn cfo cfs cfu cn- cnc cnd cnf cnn cno cns cnu co- coc cod cof con coo cos cou csc csd csf csn cso css csu cuc cud cuf cun cuo cus cuu dcc dcd dcf dcn dco dcs dcu ddc ddd ddf ddn ddo dds ddu dfc dfd dff dfn dfo dfs dfu dnc dnd dnf dnn dno dns doc dod dof don doo dos dou dsc dsd dsf dsn dso dss dsu duc dud duf dun duo dus fcc fcd fcf fcn fco fcs fcu fdc fdd fdf fdn fdo fds fdu ffc ffd fff ffn ffo ffs ffu fnc fnd fnf fnn fns fnu foc fof fon foo fos fou fsc fsd fsf fsn fso fss fsu fud fuf fun fuo fus fuu ncc ncd ncf ncn nco ncs ncu ndc ndd ndf ndn ndo nds ndu nfc nfd nff nfn nfo nfs nfu nnc nnf nnn nno nns nnu no- noc nod nof non noo nos nou nsc nsd nsf nsn nso nss nsu nuc nud nun nuo nus nuu oc- occ ocd ocf ocn oco ocs ocu odc odd odf odn odo ods odu of- ofc ofd off ofn ofo ofs ofu on- onc ond onf onn ono ons onu oo- ooc ood oof oon ooo oos os- osc osd osf osn oso oss osu ou- ouc oud ouf oun ouo ous scc scd scf scn sco scs scu sdc sdd sdf sdn sdo sds sdu sfc sfd sff sfn sfo sfs sfu snc snd snf snn sno sns snu soc sod sof son soo sos sou ss- ssc ssd ssf ssn sso sss ssu suc sud suf sun suo sus suu ucc ucd ucf ucn uco ucs ucu udc udd udf udn udo uds udu ufc ufd uff ufn ufo ufs ufu un- unc und unf unn uno uns unu uoc uod uon uoo uos usc usd usf usn uso uss usu uuc uun uus uuu