Base Difficulty

Base difficulty: Level 1205 edit

Level distribution for verb (rule_defined_action): 415: 1 475: 5 485: 2 1200: 1 1202: 3 1203: 1 1204: 2 1205: 3 1206: 3 1208: 3 1211: 1 1214: 5 1220: 4 1224: 1 1226: 3 1399: 7

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: 2870 (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 21.46 535 3% 3123 downrated 3
20th_books 34.68 650 3% 2138 downrated 3
wiki_math 73.57 1523 3% 1230 4
wiki_geography 1.38 2883 3% 9000 capped 1
wiki_biology 0.91 3923 3% 9000 capped 1
wiki_modern_life 2.20 1957 3% 10000 capped 1
wiki_arts 37.18 1857 3% 3565 downrated 3
wiki_society 52.17 1471 3% 2681 downrated 3
wiki_linguistics 23.58 3122 3% 3981 downrated 3
wiki_physical_science 0.90 3928 3% 8000 capped 1
wiki_history 66.75 1325 3% 1953 downrated 3
early_modern_science 23.83 1005 3% 3937 downrated 2
religious_translated 54.41 1426 3% 1599 downrated 4
cooking 1.54 1709 3% 5200 capped 1
legal_scotus 76.06 2144 100% 1437 4
eu_parliament_debates 240.68 351 3% 494 downrated 4
openstax_science 1.83 2117 3% 11000 capped 1
openstax_society 29.45 1116 3% 3885 downrated 3
wpa_life_histories 35.22 858 3% 2001 downrated 3

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.