C11111333133313232233133313331333133313231313131211113313331123313231311321   >>    C1111133313331323223313331333133313331323131313121111331333112331323131132   <<    C11111333133313232233133313331333133313231313131211113313331123313231311323   >>      C11111333133313232233133313331333133313231313131211113313331123313231311322   >>