Cartan #0:
split: 0; compact: 9; complex: 0
canonical twisted involution: e
twisted involution orbit size: 1; fiber size: 512; strong inv: 512
imaginary root system: A8
real root system is empty
complex factor is empty
real form #4: [0,1,2,4,5,6,8,10,11,13,16,17,18,20,21,22,24,26,27,29,32,34,35,37,
    40,41,42,44,45,46,49,52,54,55,59,64,65,66,68,69,70,72,74,75,77,80,81,82,84,
    85,86,88,90,91,93,96,98,99,101,104,105,106,108,109,110,113,116,118,119,123,
    128,130,131,133,136,137,138,140,141,142,145,148,150,151,155,160,161,162,164,
    165,166,168,170,171,173,176,177,178,180,181,182,184,186,187,189,193,196,198,
    199,203,208,210,211,213,216,217,218,220,221,222,227,233,236,238,239,
    247] (126)
real form #3: [3,7,9,12,14,19,23,25,28,30,33,36,38,43,47,48,50,53,56,58,61,67,
    71,73,76,78,83,87,89,92,94,97,100,102,107,111,112,114,117,120,122,125,129,
    132,134,139,143,144,146,149,152,154,157,163,167,169,172,174,179,183,185,188,
    190,192,194,197,200,202,205,209,212,214,219,223,224,226,229,232,234,237,241,
    244,246,251] (84)
real form #2: [15,31,39,51,57,60,62,79,95,103,115,121,124,126,135,147,153,156,
    158,175,191,195,201,204,206,215,225,228,230,235,240,242,245,248,250,
    253] (36)
real form #1: [63,127,159,207,231,243,249,252,254] (9)
real form #0: [255] (1)


Cartan #1:
split: 0; compact: 7; complex: 1
canonical twisted involution: 1,2,3,4,5,6,7,8,7,6,5,4,3,2,1
twisted involution orbit size: 36; fiber size: 128; strong inv: 4608
imaginary root system: A6
real root system: A1
complex factor is empty
real form #4: [0,1,2,4,5,6,8,10,11,13,16,17,18,20,21,22,24,26,27,29,32,34,35,37,
    40,41,42,44,45,46,49,52,54,55,59] (35)
real form #3: [3,7,9,12,14,19,23,25,28,30,33,36,38,43,47,48,50,53,56,58,
    61] (21)
real form #2: [15,31,39,51,57,60,62] (7)
real form #1: [63] (1)


Cartan #2:
split: 0; compact: 5; complex: 2
canonical twisted involution: 2,1,3,2,4,3,5,4,6,5,7,6,5,4,3,2,1,8,7,6,5,4,3,2
twisted involution orbit size: 378; fiber size: 32; strong inv: 12096
imaginary root system: A4
real root system: A1.A1
complex factor: A1
real form #4: [0,1,2,4,5,6,8,10,11,13] (10)
real form #3: [3,7,9,12,14] (5)
real form #2: [15] (1)