## {4,4}, square 1S2a + tromino 1S, solution 2
e2.
angleunit(pi/2)
# the line below lets us specify internal angles
angleofs(pi)
unittile(1,1,1,1)
unittile(1,1,2,2,1,1,2,2)
# the Conway notation
conway("(0 1')(2 5')(1 3')(3 7')(0')(4')(2')(6')")
sublines(1)