## {4,4}, tromino 1F + tromino 1F, solution 13
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)(1 5)(2 3')(3 2')(4 4')(6 7)(0')(1' 5')(6' 7')")
sublines(1)