Cartan #0:
split: 0; compact: 7; complex: 0
canonical twisted involution: e
twisted involution orbit size: 1; fiber size: 128; strong inv: 128
imaginary root system: D7
real root system is empty
complex factor is empty
real form #4: [0,1,2,4,5,6,8,10,11,13,16,17,18,20,21,22,24,26,27,29,96,98,99,
    101,104,105,106,108,109,110,113,116,118,119,123] (35)
real form #3: [3,7,9,12,14,19,23,25,28,30,97,100,102,107,111,112,114,117,120,
    122,125] (21)
real form #1: [15,31,103,115,121,124,126] (7)
real form #2: [32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,
    53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,
    78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95] (64)
real form #0: [127] (1)