The standalone METHODS.md, LICENSE.txt and CITATION.cff files are licensed under CC BY 4.0. Credit FiveLetterWords.io and Echoes pronunciation graph release v1. CC BY requires creator credit, but no hyperlink is required.

The graph-derived files — summary.csv, sample-cat-neighbourhood.json, network-summary.svg, network-summary.png and both classroom PDFs — are distributed under CC BY-SA 4.0. They use CMU Pronouncing Dictionary source material under BSD-2-Clause (https://github.com/cmusphinx/cmudict/blob/74790861f652b15e4ac49015a90074ad62a27690/LICENSE) and a graph universe/display-spelling selection based on wordfreq (Robyn Speer) 3.1.1, whose word-frequency data are CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/). The classroom PDFs embed Manrope, distributed under the SIL Open Font License 1.1 (https://openfontlicense.org/). Retain both data-source notices, credit FiveLetterWords and wordfreq (Robyn Speer), and apply the ShareAlike terms when reusing the graph-derived files. No FiveLetterWords licence grant overrides an upstream source licence. See manifest.json and METHODS.md for the pinned records and per-file licences.