C11111333133313232233133313331333132332313112113313231323113121   >>    C1111133313331323223313331333133313233231311211331323132311312   <<    C11111333133313232233133313331333132332313112113313231323113123   >>      C11111333133313232233133313331333132332313112113313231323113122   >>