Base difficulty: Level 226 edit
Level distribution for preposition (preposition_other): 6: 10 10: 7 11: 8 14: 1 18: 4 23: 2 226: 5 1080: 1 1120: 1
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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 |
29.41 | 2881 | 100% | 2881 | 1 |
20th_books |
26.92 | 3033 | 100% | 3033 | 1 |
wiki_math |
87.77 | 1374 | 100% | 1374 | 1 |
wiki_geography |
401.97 | 272 | 100% | 272 | 1 |
wiki_biology |
392.92 | 287 | 100% | 287 | 1 |
wiki_modern_life |
267.72 | 435 | 100% | 435 | 1 |
wiki_arts |
356.14 | 297 | 100% | 297 | 1 |
wiki_society |
279.60 | 403 | 100% | 403 | 1 |
wiki_linguistics |
269.25 | 495 | 100% | 495 | 1 |
wiki_physical_science |
184.99 | 781 | 100% | 781 | 1 |
wiki_history |
356.81 | 299 | 100% | 299 | 1 |
early_modern_science |
127.95 | 894 | 100% | 894 | 1 |
religious_translated |
110.72 | 949 | 100% | 949 | 1 |
cooking |
57.47 | 1635 | 100% | 1635 | 1 |
legal_scotus |
74.88 | 1712 | 100% | 1712 | 1 |
eu_parliament_debates |
181.03 | 657 | 100% | 657 | 1 |
openstax_science |
247.70 | 558 | 100% | 558 | 1 |
openstax_society |
284.81 | 455 | 100% | 455 | 1 |
wpa_life_histories |
38.54 | 2326 | 100% | 2326 | 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.