http://ujh6xlyukepvbtaaywygzvovoudcvlpokowturdlm37sjzodw573j3ad.onion/kanji.html
This is used as the primary "cluster" for grouping the kanji, so the first 80 are all grade 1
kanji. The 2nd sort variable is the stroke count. Kanji within each group cluster are ordered from simplest to most
complex (lowest to highest stroke count) when that complexity has yet to be encountered numerically in the list. i.e.,
the grade 1 kanji start at 1 stroke and work their way up to 12 strokes.