## {4,4}, tromino 1F + tromino 1F, solution 12
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 2')(3 4')(4 3')(6 7)[0'](1' 5')[6'][7']")
sublines(1)