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