## {4,4}, tetromino 3S (S), solution 7
e2.
angleunit(pi/2)
# the line below lets us specify internal angles
angleofs(pi)
unittile(1,1,2,1,3,1,1,2,1,3)
# the Conway notation
conway("[0 2][1 9](3 8)[4 6][5 7]")
sublines(1)