Does the mirror to the right of the other mirror have huge size?
No, the mirror is small.
    src        edge_attr  dst
0     0  to the right of    3
1     0   to the left of    2
2     0  to the right of   18
3     1  to the right of    3
4     1   to the left of    2
5     1  to the right of   18
6     1               on    0
7     2  to the right of    0
8     2  to the right of    4
9     2  to the right of    1
10    2  to the right of    7
11    2  to the right of   15
12    2  to the right of   14
13    3   to the left of   19
14    3   to the left of    0
15    3   to the left of    1
16    3   to the left of   15
17    3  to the right of   16
18    3  to the right of   17
19    3               in    4
20    4   to the left of    2
21    5   to the left of   14
22    5  to the right of   11
23    5   to the left of   12
24    5               in    6
25    6   to the left of   14
26    7  to the right of   17
27    7  to the right of   16
28    7   to the left of    2
29    8  to the right of   21
30    9   to the left of   19
31   11               on    7
32   11   to the left of   12
33   11   to the left of    5
34   12  to the right of    5
35   12  to the right of   11
36   14  to the right of    5
37   14   to the left of    2
38   14  to the right of    6
39   15  to the right of    3
40   15   to the left of    2
41   15  to the right of   18
42   16   to the left of   18
43   16   to the left of    3
44   16   to the left of    7
45   17   to the left of   18
46   17   to the left of    7
47   17   to the left of    3
48   18   to the left of   19
49   18  to the right of   17
50   18   to the left of    1
51   18   to the left of    0
52   18  to the right of   16
53   18   to the left of   15
54   19  to the right of    3
55   19  to the right of    9
56   19  to the right of   18
57   21   to the left of    8