(qr #2A((12 -51 4) (6 167 -68) (-4 24 -41)))

#2A((-0.85  0.39  0.33)
    (-0.42 -0.90 -0.03)
    ( 0.28 -0.17  0.94))

#2A((-14.0  -21.0  14.0)
    (  0.0 -175.0  70.0)
    (  0.0    0.0 -35.0))