## {4,4}, domino 1S + domino 1A1, solution 1
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 0')(3 0')(2 5')(5 5')(1)(4)(1' 4')(2')(3')")
sublines(1)