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: A4
real root system is empty
complex factor is empty
real form #2: [0,1,2,4,5,6,8,10,11,13] (10)
real form #1: [3,7,9,12,14] (5)
real form #0: [15] (1)


Cartan #1:
split: 0; compact: 3; complex: 1
canonical twisted involution: 1,2,3,4,3,2,1
twisted involution orbit size: 10; fiber size: 8; strong inv: 80
imaginary root system: A2
real root system: A1
complex factor is empty
real form #2: [0,1,2] (3)
real form #1: [3] (1)


Cartan #2:
split: 0; compact: 1; complex: 2
canonical twisted involution: 2,1,3,2,1,4,3,2
twisted involution orbit size: 15; fiber size: 2; strong inv: 30
imaginary root system is empty
real root system: A1.A1
complex factor: A1
real form #2: [0] (1)