C11111333133313232233133313331333133313231313131211113313233232213231   >>    C1111133313331323223313331333133313331323131313121111331323323221323   <<    C11111333133313232233133313331333133313231313131211113313233232213233   >>      C11111333133313232233133313331333133313231313131211113313233232213232   >>