## {4,4}, square 1S2a + domino 1S
e2.
angleunit(pi/2)
# the line below lets us specify internal angles
angleofs(pi)
unittile(1,1,1,1)
unittile(1,1,2,1,1,2)
# the Conway notation
conway("(0)(1 1')(2)(3 4')(0' 2')(3' 5')")
sublines(1)