C11111333133313232233133313331333132332313112113313331333132313121212131   >>    C1111133313331323223313331333133313233231311211331333133313231312121213   <<    C11111333133313232233133313331333132332313112113313331333132313121212133   >>      C11111333133313232233133313331333132332313112113313331333132313121212132   >>