C1111121111331311211331333133313331313331323223313331312111111331323123232311   >>    C111112111133131121133133313331333131333132322331333131211111133132312323231   <<    C1111121111331311211331333133313331313331323223313331312111111331323123232313   >>      C1111121111331311211331333133313331313331323223313331312111111331323123232312   >>