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The rhombs {(r,R)²} have corner angles r = arccos(7/18) = 67.114620° and R = arccos(-7/18) = 112.885380°.

Incidence matrix

12 * * |  2  2  1 | 1  2  2  [33,r2]
 * 6 * |  0  4  0 | 0  2  2  [(3,R)2]
 * * 4 |  0  0  3 | 0  0  3  [R3]
-------+----------+--------
 2 0 0 | 12  *  * | 1  1  0
 1 1 0 |  * 24  * | 0  1  1
 1 0 1 |  *  * 12 | 0  0  2
-------+----------+--------
 3 0 0 |  3  0  0 | 4  *  *  {3}
 2 1 0 |  1  2  0 | * 12  *  {3}
 2 1 1 |  0  2  2 | *  * 12  {(r,R)2}