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