Base Difficulty

Base difficulty: Level 1399 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: 875 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cefr B1 (3 of 6) 4200

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 58.54 2862 100% 1344 3
20th_books 26.29 4810 100% 2603 2
wiki_math 557.40 418 100% 232 4
wiki_geography 38.26 3552 100% 3552 1
wiki_biology 135.02 1740 100% 1020 2
wiki_modern_life 151.14 1740 100% 980 2
wiki_arts 61.20 3798 100% 2135 2
wiki_society 142.08 2086 100% 963 3
wiki_linguistics 24.02 4020 100% 4020 1
wiki_physical_science 272.85 725 100% 527 2
wiki_history 124.00 1651 100% 1090 2
early_modern_science 384.44 465 100% 285 3
religious_translated 250.03 1002 100% 399 4
cooking 146.45 1063 100% 719 2
legal_scotus 415.17 651 100% 306 4
eu_parliament_debates 126.35 1646 100% 776 3
openstax_science 277.44 1066 100% 496 3
openstax_society 84.25 2245 100% 1516 2
wpa_life_histories 50.79 2484 100% 1538 2

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.