## {4,4}, tromino 1S + tromino 1A2
e2.
angleunit(pi/2)
# the line below lets us specify internal angles
angleofs(pi)
unittile(1,1,2,2,1,1,2,2)
unittile(1,1,2,2,1,1,2,2)
# the Conway notation
conway("(0 2)(4 6)(1 1')(5 1')(3)(7)(0' 2')(3' 7')(4' 6')(5')")
sublines(1)