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: 1650 (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 60.62 2003 67% 1403 3
20th_books 42.86 2393 67% 1828 3
wiki_math 28.85 2967 57% 2667 2
wiki_geography 94.84 1186 67% 1443 downrated 2
wiki_biology 53.79 2995 67% 2478 2
wiki_modern_life 106.38 1415 57% 1391 2
wiki_arts 93.42 1461 67% 1486 downrated 2
wiki_society 146.65 1533 57% 951 4
wiki_linguistics 54.20 2508 67% 2139 2
wiki_physical_science 74.39 1557 57% 1852 downrated 2
wiki_history 162.95 902 67% 812 3
early_modern_science 40.66 2831 67% 2540 2
religious_translated 173.04 681 57% 584 4
cooking 0.00 — — — 0
legal_scotus 45.65 2826 57% 1967 4
eu_parliament_debates 66.57 2014 57% 1291 4
openstax_science 82.63 1453 57% 1498 downrated 3
openstax_society 247.96 793 57% 560 4
wpa_life_histories 33.88 2391 57% 2331 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.