C11111333133313232233133313331333132332313112113313331323221212121   >>    C1111133313331323223313331333133313233231311211331333132322121212   <<    C11111333133313232233133313331333132332313112113313331323221212123   >>      C11111333133313232233133313331333132332313112113313331323221212122   >>