Base Difficulty

Base difficulty: Level 6 edit

Level distribution for preposition (preposition_other): 6: 4 10: 10 11: 5 13: 2 14: 1 15: 1 18: 4 226: 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 913.65 137 100% 137 1
20th_books 792.94 165 100% 165 1
wiki_math 433.89 327 100% 327 1
wiki_geography 208.18 573 100% 573 1
wiki_biology 379.47 293 100% 293 1
wiki_modern_life 605.22 155 100% 155 1
wiki_arts 401.40 251 100% 251 1
wiki_society 562.84 165 100% 165 1
wiki_linguistics 490.10 241 100% 241 1
wiki_physical_science 388.02 335 100% 335 1
wiki_history 440.57 206 100% 206 1
early_modern_science 930.24 116 100% 116 1
religious_translated 1146.03 113 100% 113 1
cooking 670.75 236 100% 236 1
legal_scotus 942.49 109 100% 109 1
eu_parliament_debates 637.39 202 100% 202 1
openstax_science 428.91 273 100% 273 1
openstax_society 516.34 221 100% 221 1
wpa_life_histories 416.36 286 100% 286 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.