C11111333133313232233133313331333132332313112113313331311221123311   >>    C1111133313331323223313331333133313233231311211331333131122112331   <<    C11111333133313232233133313331333132332313112113313331311221123313   >>      C11111333133313232233133313331333132332313112113313331311221123312   >>