Base Difficulty

Base difficulty: Level 20 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: 689 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
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 202.99 871 80% 449 4
20th_books 262.42 669 80% 366 4
wiki_math 0.00 — — — 0
wiki_geography 78.75 3035 80% 1737 2
wiki_biology 0.00 — — — 0
wiki_modern_life 113.79 2165 80% 1299 2
wiki_arts 115.23 2111 100% 1210 2
wiki_society 280.48 961 80% 484 3
wiki_linguistics 18.49 4132 80% 5165 downrated 1
wiki_physical_science 0.00 — — — 0
wiki_history 277.08 934 100% 476 3
early_modern_science 76.01 2535 100% 1426 2
religious_translated 145.17 1148 80% 683 3
cooking 0.00 — — — 0
legal_scotus 402.54 553 80% 311 4
eu_parliament_debates 315.34 666 80% 357 4
openstax_science 14.63 5372 80% 6715 downrated 1
openstax_society 625.17 285 80% 202 4
wpa_life_histories 767.51 260 80% 150 4

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.