## {4,4}, square 1F + tromino 1F, solution 9
e2.
angleunit(pi/2)
# the line below lets us specify internal angles
angleofs(pi)
unittile(1,1,1,1)
unittile(1,1,2,2,1,1,2,2)
# the Conway notation
conway("[0](1 1')(2 0')(3 5')[2'][3'][4'](6' 7')")
sublines(1)