WG44JQLOE3BQOS6DZMCTCRWSNDLU2CA4DP7ZTWADEOP2GQ5TQDBQC
24V7KTFI76AULBAV4MVCC2HMJLLNMWEVB5NN7KT7V55PLW565QFQC
DKEAEDXCBBRU2D42EQRQ6EQ7NEXJMR76VLF3RIORFMUYYPAXWJLQC
# Invent a random grid
# Calculate coefficients
# Go back to the grid (it'll be low-pass filtered)
# Go back to coefficients again (they must be the same)
# Go back to the grid again (it must the be same this time)