Result: {
  "automation technology process" => 3,
  "mass creation" => 2,
  "rendition" => 3,
  "saturation" => 3,
}
# --- tests
@slices = [
  [],
  [[0], [1]],
  [[0], [0, 1], [1], [1, 2], [2]],
  [[0], [0, 1], [0, 1, 2], [1], [1, 2], [1, 2, 3], [2], [2, 3], [3]],
]
partitions('automation technology process limit') = (
  "automation",
  "automation technology",
  "automation technology process",
  "technology",
  "technology process",
  "technology process limit",
  "process",
  "process limit",
  "limit",
)