C111112111133131121133133313331333133311221123121111331323223213331323132313111   >>    C11111211113313112113313331333133313331122112312111133132322321333132313231311   <<    C111112111133131121133133313331333133311221123121111331323223213331323132313113   >>      C111112111133131121133133313331333133311221123121111331323223213331323132313112   >>