It either can be thought of as a degenerate 5D segmentotope with zero height, or as a 4D euclidean decomposition of the larger base into smaller bits.

Incidence matrix according to Dynkin symbol

oo3xo3oo5ox&#x   → height = 0
(rox || hi)

o.3o.3o.5o.    | 720   * |   10    5    0 |    5   10   20    5   0 |   5   2   10   10   10   1   0 | 1   5    5   2 0
.o3.o3.o5.o    |   * 600 |    0    6    4 |    0    0   12   12   6 |   0   0    4    4   12   6   4 | 0   1    4   4 1
---------------+---------+----------------+-------------------------+--------------------------------+-----------------
.. x. .. ..    |   2   0 | 3600    *    * |    1    2    2    0   0 |   2   1    2    2    1   0   0 | 1   2    1   1 0
oo3oo3oo5oo&#x |   1   1 |    * 3600    * |    0    0    4    2   0 |   0   0    2    2    4   1   0 | 0   1    2   2 0
.. .. .. .x    |   0   2 |    *    * 1200 |    0    0    0    3   3 |   0   0    0    0    3   3   3 | 0   0    1   3 1
---------------+---------+----------------+-------------------------+--------------------------------+-----------------
o.3x. .. ..    |   3   0 |    3    0    0 | 1200    *    *    *   * |   2   0    2    0    0   0   0 | 1   2    1   0 0
.. x.3o. ..    |   3   0 |    3    0    0 |    * 2400    *    *   * |   1   1    0    1    0   0   0 | 1   1    0   1 0
.. xo .. ..&#x |   2   1 |    1    2    0 |    *    * 7200    *   * |   0   0    1    1    1   0   0 | 0   1    1   1 0
.. .. .. ox&#x |   1   2 |    0    2    1 |    *    *    * 3600   * |   0   0    0    0    2   1   0 | 0   0    1   2 0
.. .. .o5.x    |   0   5 |    0    0    5 |    *    *    *    * 720 |   0   0    0    0    0   1   2 | 0   0    0   2 1
---------------+---------+----------------+-------------------------+--------------------------------+-----------------
o.3x.3o. ..    ♦   6   0 |   12    0    0 |    4    4    0    0   0 | 600   *    *    *    *   *   * | 1   1    0   0 0
.. x.3o.5o.    ♦  12   0 |   30    0    0 |    0   20    0    0   0 |   * 120    *    *    *   *   * | 1   0    0   1 0
oo3xo .. ..&#x ♦   3   1 |    3    3    0 |    1    0    3    0   0 |   *   * 2400    *    *   *   * | 0   1    1   0 0
.. xo3oo ..&#x ♦   3   1 |    3    3    0 |    0    1    3    0   0 |   *   *    * 2400    *   *   * | 0   1    0   1 0
.. xo .. ox&#x ♦   2   2 |    1    4    1 |    0    0    2    2   0 |   *   *    *    * 3600   *   * | 0   0    1   1 0
.. .. oo5ox&#x ♦   1   5 |    0    5    5 |    0    0    0    5   1 |   *   *    *    *    * 720   * | 0   0    0   2 0
.. .o3.o5.x    ♦   0  20 |    0    0   30 |    0    0    0    0  12 |   *   *    *    *    *   * 120 | 0   0    0   1 1
---------------+---------+----------------+-------------------------+--------------------------------+-----------------
o.3x.3o.5o.    ♦ 720   0 | 3600    0    0 | 1200 2400    0    0   0 | 600 120    0    0    0   0   0 | 1   *    *   * *
oo3xo3oo ..&#x ♦   6   1 |   12    6    0 |    4    4   12    0   0 |   1   0    4    4    0   0   0 | * 600    *   * *
oo3xo .. ox&#x ♦   3   2 |    3    6    1 |    1    0    6    3   0 |   0   0    2    0    3   0   0 | *   * 1200   * *
.. xo3oo5ox&#x ♦  12  20 |   30   60   30 |    0   20   60   60  12 |   0   1    0   20   30  12   1 | *   *    * 120 *
.o3.o3.o5.x    ♦   0 600 |    0    0 1200 |    0    0    0    0 720 |   0   0    0    0    0   0 120 | *   *    *   * 1