ah, habs selber rausgefunden 🙂
 
 EXTRUDE 26, 0, 0, 26, 63, 
 0, 0, 901,
 222.5, 360, 4001,
 193.1851653, -51.76380902, 901,
 11, 360, 4001,
 193.1851653, 51.76380902, 901,
 11, 360, 4001,
 141.4213562, 141.4213562, 901,
 11, 360, 4001,
 141.4213562, -141.4213562, 901,
 11, 360, 4001,
 51.76380902, 193.1851653, 901,
 11, 360, 4001,
 51.76380902, -193.1851653, 901,
 11, 360, 4001,
 -51.76380902, 193.1851653, 901,
 11, 360, 4001,
 -51.76380902, -193.1851653, 901,
 11, 360, 4001,
 -141.4213562, 141.4213562, 901,
 11, 360, 4001,
 -141.4213562, -141.4213562, 901,
 11, 360, 4001,
 -193.1851653, 51.76380902, 901,
 11, 360, 4001,
 -193.1851653, -51.76380902, 901,
 11, 360, 4001