## {4,4}, square 1A1 + tromino 1A1
e2.
angleunit(pi/2)
# the line below lets us specify internal angles
angleofs(pi)
unittile(1,1,1,1)
unittile(1,1,2,2,1,1,2,2)
# the Conway notation
conway("(0)(1 1')(3 5')(2 7')(0')(6')(2' 4')(3')")
sublines(1)