## {4,4}, tetromino 5V (O), solution 1; identical to {4,4}, included for completeness
e2.
angleunit(pi/2)
# the line below lets us specify internal angles
angleofs(pi)
unittile(1,2,1,2,1,2,1,2)
# the Conway notation
conway("(0 1)(2 7)(3 6)(4 5)")
sublines(2)