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