Base Difficulty

Base difficulty: Level 1205 edit

Level distribution for verb (possession): 3: 3 7: 2 10: 1 20: 3 175: 14 254: 1 309: 1 314: 1 360: 1 406: 1 415: 3 455: 1 475: 3 1070: 1 1205: 1 1399: 28

Per-Language Difficulty Overrides

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

Add Difficulty Override
-1 to exclude, 1-1399 for level
Frequency and Tier Signals
Combined Frequency Rank: 9561 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cambridge_yle Starters (1 of 3) 325
cefr A1 (1 of 6) 800

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 11.74 524 3% 8098 downrated 5
20th_books 10.58 598 3% 9272 downrated 5
wiki_math 6.39 1094 3% 8000 capped 4
wiki_geography 1.17 3404 3% 9000 capped 1
wiki_biology 0.00 — — — 0
wiki_modern_life 6.14 1635 3% 10000 capped 3
wiki_arts 11.00 719 1% 10000 capped 5
wiki_society 5.43 2382 3% 11000 capped 5
wiki_linguistics 2.08 2926 3% 9000 capped 3
wiki_physical_science 1.17 3218 3% 8000 capped 1
wiki_history 5.82 1958 3% 9000 capped 4
early_modern_science 10.35 558 3% 10400 capped 5
religious_translated 9.30 911 3% 10400 capped 5
cooking 4.98 1197 3% 5200 capped 2
legal_scotus 6.23 1559 3% 18764 downrated 5
eu_parliament_debates 8.84 683 3% 11000 capped 4
openstax_science 3.37 2163 3% 11000 capped 3
openstax_society 4.70 2210 3% 11000 capped 4
wpa_life_histories 5.24 1651 3% 16721 downrated 5

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.