## {4,4}, square 1R2 + domino 1A1, solution 1
e2.
angleunit(pi/2)
# the line below lets us specify internal angles
angleofs(pi)
unittile(1,1,1,1)
unittile(1,1,2,1,1,2)
unittile(1,1,1,1)
# the Conway notation
conway("(0 0'')(2 2'')(1 0')(3 0')(3'' 5')(1'' 5')(1' 4')(2')(3')")
sublines(1)