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: C7
real root system is empty
complex factor is empty
real form #4: [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,
    25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,
    50,51,52,53,54,55,56,57,58,59,60,61,62,63] (64)
real form #3: [64,65,66,68,69,70,72,74,75,77,80,81,82,84,85,86,88,90,91,93,96,
    98,99,101,104,105,106,108,109,110,113,116,118,119,123] (35)
real form #2: [67,71,73,76,78,83,87,89,92,94,97,100,102,107,111,112,114,117,120,
    122,125] (21)
real form #1: [79,95,103,115,121,124,126] (7)
real form #0: [127] (1)