Base difficulty: Level 1399 edit
Level distribution for verb (aspectual): 1399: 3
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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 |
32.08 | 2682 | 67% | 2537 | 2 |
20th_books |
32.25 | 2667 | 67% | 2264 | 3 |
wiki_math |
0.00 | — | — | — | 0 |
wiki_geography |
49.17 | 1910 | 67% | 2865 downrated | 1 |
wiki_biology |
21.49 | 3817 | 67% | 5725 downrated | 1 |
wiki_modern_life |
22.80 | 4040 | 67% | 6060 downrated | 1 |
wiki_arts |
39.28 | 2337 | 67% | 3506 downrated | 1 |
wiki_society |
22.98 | 3930 | 67% | 5895 downrated | 1 |
wiki_linguistics |
25.63 | 2897 | 67% | 4346 downrated | 1 |
wiki_physical_science |
0.00 | — | — | — | 0 |
wiki_history |
84.13 | 1413 | 67% | 1571 downrated | 2 |
early_modern_science |
12.90 | 4629 | 67% | 6944 downrated | 1 |
religious_translated |
31.33 | 3293 | 67% | 2680 | 2 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
37.36 | 3312 | 67% | 2404 | 3 |
eu_parliament_debates |
25.41 | 3796 | 67% | 2892 | 2 |
openstax_science |
0.00 | — | — | — | 0 |
openstax_society |
37.45 | 3644 | 67% | 3062 | 2 |
wpa_life_histories |
13.27 | 3615 | 67% | 5422 downrated | 1 |
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.