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