C2221333133313331311233132313331333133313331323222123313132313121   >>    C222133313331333131123313231333133313331333132322212331313231312   <<    C2221333133313331311233132313331333133313331323222123313132313123   >>      C2221333133313331311233132313331333133313331323222123313132313122   >>