C11111333133313232233133313331333133313231313131211113313233313231311   >>    C1111133313331323223313331333133313331323131313121111331323331323131   <<    C11111333133313232233133313331333133313231313131211113313233313231313   >>      C11111333133313232233133313331333133313231313131211113313233313231312   >>