## {4,4}, tetromino 3F (S), solution 11
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 4][1 5](2 7)[3 9][6 8]")
sublines(1)