Acronym	siddiddip
Name	snub-dodecadodecahedron prism
Colonel of regiment	(is itself locally convex – no other uniform polyhedral members)
Face vector	120, 360, 318, 86
External links

As abstract polytope siddiddip is isomorphic to isdiddip, thereby replacing prograde pentagrams by retrrograde ones, resp. replacing siddid by isdid.

Incidence matrix according to Dynkin symbol

x s5/2s5s

. demi( .   . . ) | 120 |  1  1   2   2 |  1  2  2  1  1   3 |  1  1  3 1
------------------+-----+---------------+--------------------+-----------
x demi( .   . . ) |   2 | 60  *   *   * |  1  2  2  0  0   0 |  1  1  3 0
.       s   2 s   ♦   2 |  * 60   *   * |  1  0  0  0  0   2 |  0  0  2 1
. sefa( s5/2s . ) |   2 |  *  * 120   * |  0  1  0  1  0   1 |  1  0  1 1
. sefa( .   s5s ) |   2 |  *  *   * 120 |  0  0  1  0  1   1 |  0  1  1 1
------------------+-----+---------------+--------------------+-----------
x       s   2 s   |   4 |  2  2   0   0 | 30  *  *  *  *   * |  0  0  2 0
x sefa( s5/2s . ) |   4 |  2  0   2   0 |  * 60  *  *  *   * |  1  0  1 0
x sefa( .   s5s ) |   4 |  2  0   0   2 |  *  * 60  *  *   * |  0  1  1 0
.       s5/2s .   ♦   5 |  0  0   5   0 |  *  *  * 24  *   * |  1  0  0 1
.       .   s5s   ♦   5 |  0  0   0   5 |  *  *  *  * 24   * |  0  1  0 1
. sefa( s5/2s5s ) |   3 |  0  1   1   1 |  *  *  *  *  * 120 |  0  0  1 1
------------------+-----+---------------+--------------------+-----------
x       s5/2s .   ♦  10 |  5  0  10   0 |  0  5  0  2  0   0 | 12  *  * *
x       .   s5s   ♦  10 |  5  0   0  10 |  0  0  5  0  2   0 |  * 12  * *
x sefa( s5/2s5s ) ♦   6 |  3  2   2   2 |  1  1  1  0  0   2 |  *  * 60 *
.       s5/2s5s   ♦  60 |  0 30  60  60 |  0  0  0 12 12  60 |  *  *  * 2