Cartan #0:
split: 0; compact: 5; complex: 0
canonical twisted involution: e
twisted involution orbit size: 1; fiber size: 32; strong inv: 32
imaginary root system: A5
real root system is empty
complex factor is empty
real form #3: [0,2,5,8,10,13,17,20,22,27] (10)
real form #2: [1,3,4,6,9,11,12,14,16,18,21,23,24,26,29] (15)
real form #1: [7,15,19,25,28,30] (6)
real form #0: [31] (1)


Cartan #1:
split: 0; compact: 3; complex: 1
canonical twisted involution: 1,2,3,4,5,4,3,2,1
twisted involution orbit size: 15; fiber size: 8; strong inv: 120
imaginary root system: A3
real root system: A1
complex factor is empty
real form #3: [0,2,5] (3)
real form #2: [1,3,4,6] (4)
real form #1: [7] (1)


Cartan #2:
split: 0; compact: 1; complex: 2
canonical twisted involution: 2,1,3,2,4,3,2,1,5,4,3,2
twisted involution orbit size: 45; fiber size: 2; strong inv: 90
imaginary root system: A1
real root system: A1.A1
complex factor: A1
real form #3: [0] (1)
real form #2: [1] (1)