Incidence matrix according to Dynkin symbol

```o3o3x3o3x3o3o

o3o3o3o3o3o3o    | 560 |   12 |   12    6   18 |   4   6   36   9 |   2  12  18   18 |  6  12  9 |  6  2
-----------------+-----+------+----------------+------------------+------------------+-----------+------
. x . . . . .  & |   2 | 3360 |    2    1    3 |   1   2    9   3 |   1   4   9    6 |  4   5  6 |  5  1
-----------------+-----+------+----------------+------------------+------------------+-----------+------
. o3x . . . .  & |   3 |    3 | 2240    *    * |   1   1    3   0 |   1   3   3    3 |  3   4  3 |  4  1
. . x3o . . .  & |   3 |    3 |    * 1120    * |   0   2    0   3 |   1   0   9    0 |  4   0  6 |  5  0
. . x . x . .  & |   4 |    4 |    *    * 2520 |   0   0    4   1 |   0   2   4    4 |  2   4  4 |  4  1
-----------------+-----+------+----------------+------------------+------------------+-----------+------
o3o3x . . . .  & ♦   4 |    6 |    4    0    0 | 560   *    *   * |   1   3   0    0 |  3   3  0 |  3  1
. o3x3o . . .  & ♦   6 |   12 |    4    4    0 |   * 560    *   * |   1   0   3    0 |  3   0  3 |  4  0
. o3x . x . .  & ♦   6 |    9 |    2    0    3 |   *   * 3360   * |   0   1   1    2 |  1   3  2 |  3  1
. . x3o3x . .    ♦  12 |   24 |    0    8    6 |   *   *    * 420 |   0   0   4    0 |  2   0  4 |  4  0
-----------------+-----+------+----------------+------------------+------------------+-----------+------
o3o3x3o . . .  & ♦  10 |   30 |   20   10    0 |   5   5    0   0 | 112   *   *    * |  3   0  0 |  3  0
o3o3x . x . .  & ♦   8 |   16 |    8    0    6 |   2   0    4   0 |   * 840   *    * |  1   2  0 |  2  1
. o3x3o3x . .  & ♦  30 |   90 |   20   30   30 |   0   5   10   5 |   *   * 336    * |  1   0  2 |  3  0
. o3x . x3o .    ♦   9 |   18 |    6    0    9 |   0   0    6   0 |   *   *   * 1120 |  0   2  1 |  2  1
-----------------+-----+------+----------------+------------------+------------------+-----------+------
o3o3x3o3x . .  & ♦  60 |  240 |  120   80   90 |  30  30   60  15 |   6  15   6    0 | 56   *  * |  2  0
o3o3x . x3o .  & ♦  12 |   30 |   16    0   18 |   3   0   18   0 |   0   3   0    4 |  * 560  * |  1  1
. o3x3o3x3o .    ♦  90 |  360 |  120  120  180 |   0  30  120  30 |   0   0  12   20 |  *   * 56 |  2  0
-----------------+-----+------+----------------+------------------+------------------+-----------+------
o3o3x3o3x3o .  & ♦ 210 | 1050 |  560  350  630 | 105 140  630 105 |  21 105  63  140 |  7  35  7 | 16  *
o3o3x . x3o3o    ♦  16 |   48 |   32    0   36 |   8   0   48   0 |   0  12   0   16 |  0   8  0 |  * 70
```