# 1x1 matrix - trivial
O1 = [1][:, :]

# 2x2 matrices
A1 = [6 7; -6 8]
A2 = [-1 -2; 5 -9]
A3 = [1 0; 0 1]
A4 = [1 1; 0 1]
A5 = [0 1; 1 0]

# 3x3 matrices
B1 = [1 0 0; 0 2 0; 0 0 3]
B2 = [1 1 0; 0 2 1; 0 0 3]

# 4x4 matrices
C1 = [1 0 0 0; 0 2 0 0; 0 0 3 0; 0 0 0 4]
C2 = [
    2 1 0 0
    0 2 0 0
    0 0 2 1
    0 0 0 2
]

# 5x5 matrices
D1 = [1 7 7 -8 6; 1 5 5 -5 5; 1 0 2 -1 1; 0 3 3 -3 2; -1 -4 -5 5 -4]

# For which it fails
A6 = [1//2 1//1; 1//1 1//3]
