C11111333133313232233133313331333132332313112113313231323131111   >>    C1111133313331323223313331333133313233231311211331323132313111   <<    C11111333133313232233133313331333132332313112113313231323131113   >>      C11111333133313232233133313331333132332313112113313231323131112   >>