## {4,4}, square 1R4 + tromino 2F, solution 3
e2.
angleunit(pi/2)
# the line below lets us specify internal angles
angleofs(pi)
unittile(1,1,1,1)
unittile(1,1,2,1,2,1,1,3)
# the Conway notation
conway("(0 3')(1 3')(2 3')(3 3')(0')(1' 7')(2' 4')(5' 6')")
sublines(1)