Base Difficulty

Base difficulty: Level 10 edit

Level distribution for preposition (preposition_other): 6: 8 10: 7 11: 5 14: 1 18: 4 23: 2 226: 3 1080: 1 1120: 1

Per-Language Difficulty Overrides

No difficulty overrides set. The base difficulty level will be used for all languages.

Add Difficulty Override
-1 to exclude, 1-1299 for level
Frequency and Tier Signals
Combined Frequency Rank: — (run python -m storage.admin --calc-ranks to populate)
Tier Signals
Source Tier Rank used
cambridge_yle Flyers (3 of 3) 1200

Rank used = synthetic rank this tier contributes to the combined frequency rank (lower = more common).

Corpus Frequency
Corpus Freq (per M) Best form Share Zipf rank Forms
19th_books 0.00 — — — 0
20th_books 1733.52 73 99% 74 downrated 1
wiki_math 1192.13 98 99% 99 downrated 1
wiki_geography 1725.96 48 99% 48 1
wiki_biology 992.32 96 99% 97 downrated 1
wiki_modern_life 1320.14 63 99% 63 1
wiki_arts 1051.06 83 99% 84 downrated 1
wiki_society 1101.19 75 99% 76 downrated 1
wiki_linguistics 655.82 179 99% 180 downrated 1
wiki_physical_science 1068.66 82 99% 83 downrated 1
wiki_history 1334.19 70 99% 71 downrated 1
early_modern_science 983.10 111 99% 112 downrated 1
religious_translated 959.56 137 99% 138 downrated 1
cooking 3542.29 37 99% 37 1
legal_scotus 792.91 123 99% 124 downrated 1
eu_parliament_debates 707.69 177 99% 178 downrated 1
openstax_science 0.00 — — — 0
openstax_society 1518.78 66 99% 66 1
wpa_life_histories 2114.93 62 99% 62 1

Best form = the single best-ranked form in the corpus, share-blind — how the spelling itself ranked. Share = how much of that spelling belongs to this lemma, when several senses compete for it. Zipf rank = all the forms combined (variant spellings included), each scaled by its share, and what feeds the combined frequency rank. Combining forms improves on the best form, but a share below 100% pushes the other way and usually wins: a sense holding a small slice of a common spelling is a rare word, so its rank lands downrated below the best form — and once it falls past what the corpus can support it is capped at the rank an unlisted word would get.