## {4,4}, square 1A2 + domino 1R
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)
unittile(1,1,2,1,1,2)
# the Conway notation
conway("(0 0')(0 3')(1 1')(1 4')(2 4'')(2 1'')(3 5'')(3 2'')(2')(3'')")
sublines(1)