Incidence matrix according to Dynkin symbol

xno o3x3o5o   (n>2)

. . . . . . | 720n |    2    10 |   1    20     5    10 |   10    10    20    5    2 |    5   10   10    4 1 |   5   2 2
------------+------+------------+-----------------------+----------------------------+-----------------------+----------
x . . . . . |    2 | 720n     * |   1    10     0     0 |   10     5    10    0    0 |    5   10    5    2 0 |   5   2 1
. . . x . . |    2 |    * 3600n |   0     2     1     2 |    1     2     4    2    1 |    1    2    4    2 1 |   2   1 2
------------+------+------------+-----------------------+----------------------------+-----------------------+----------
xno . . . . |    n |    n     0 | 720     *     *     * ♦   10     0     0    0    0 |    5   10    0    0 0 |   5   2 0
x . . x . . |    4 |    2     2 |   * 3600n     *     * |    1     1     2    0    0 |    1    2    2    1 0 |   2   1 1
. . o3x . . |    3 |    0     3 |   *     * 1200n     * |    0     2     0    2    0 |    1    0    4    0 1 |   2   0 2
. . . x3o . |    3 |    0     3 |   *     *     * 2400n |    0     0     2    1    1 |    0    1    2    2 1 |   1   1 2
------------+------+------------+-----------------------+----------------------------+-----------------------+----------
xno . x . . ♦   2n |   2n     n |   2     n     0     0 | 3600     *     *    *    * |    1    2    0    0 0 |   2   1 0
x . o3x . . ♦    6 |    3     6 |   0     3     2     0 |    * 1200n     *    *    * |    1    0    2    0 0 |   2   0 1
x . . x3o . ♦    6 |    3     6 |   0     3     0     2 |    *     * 2400n    *    * |    0    1    1    1 0 |   1   1 1
. . o3x3o . ♦    6 |    0    12 |   0     0     4     4 |    *     *     * 600n    * |    0    0    2    0 1 |   1   0 2
. . . x3o5o ♦   12 |    0    30 |   0     0     0    20 |    *     *     *    * 120n |    0    0    0    2 1 |   0   1 2
------------+------+------------+-----------------------+----------------------------+-----------------------+----------
xno o3x . . ♦   3n |   3n    3n |   3    3n     n     0 |    3     n     0    0    0 | 1200    *    *    * * |   2   0 0
xno . x3o . ♦   3n |   3n    3n |   3    3n     0     n |    3     0     n    0    0 |    * 2400    *    * * |   1   1 0
x . o3x3o . ♦   12 |    6    24 |   0    12     8     8 |    0     4     4    2    0 |    *    * 600n    * * |   1   0 1
x . . x3o5o ♦   24 |   12    60 |   0    30     0    40 |    0     0    20    0    2 |    *    *    * 120n * |   0   1 1
. . o3x3o5o ♦  720 |    0  3600 |   0     0  1200  2400 |    0     0     0  600  120 |    *    *    *    * n |   0   0 2
------------+------+------------+-----------------------+----------------------------+-----------------------+----------
xno o3x3o . ♦   6n |   6n   12n |   6   12n    4n    4n |   12    4n    4n    n    0 |    4    4    n    0 0 | 600   * *
xno . x3o5o ♦  12n |  12n   30n |  12   30n     0   20n |   30     0   20n    0    n |    0   20    0    n 0 |   * 120 *
x . o3x3o5o ♦ 1440 |  720  7200 |   0  3600  2400  4800 |    0  1200  2400 1200  240 |    0    0  600  120 2 |   *   * n