## {4,4}, square 1R2 + 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 1')(1 2')(2 1')(3 2')(0' 3')(4' 7')[5' 6']")
sublines(1)