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 |
11.60 | 5865 | 100% | 5865 | 1 |
20th_books |
21.03 | 3683 | 100% | 3683 | 1 |
wiki_math |
143.21 | 940 | 100% | 940 | 1 |
wiki_geography |
605.09 | 172 | 100% | 172 | 1 |
wiki_biology |
366.22 | 314 | 100% | 314 | 1 |
wiki_modern_life |
541.88 | 175 | 100% | 175 | 1 |
wiki_arts |
155.27 | 848 | 100% | 848 | 1 |
wiki_society |
231.32 | 524 | 100% | 524 | 1 |
wiki_linguistics |
105.87 | 1230 | 100% | 1230 | 1 |
wiki_physical_science |
672.96 | 146 | 100% | 146 | 1 |
wiki_history |
105.85 | 1260 | 100% | 1260 | 1 |
early_modern_science |
194.78 | 554 | 100% | 554 | 1 |
religious_translated |
57.30 | 1740 | 100% | 1740 | 1 |
cooking |
185.93 | 696 | 100% | 696 | 1 |
legal_scotus |
178.71 | 728 | 100% | 728 | 1 |
eu_parliament_debates |
107.41 | 1114 | 100% | 1114 | 1 |
openstax_science |
403.13 | 303 | 100% | 303 | 1 |
openstax_society |
353.84 | 349 | 100% | 349 | 1 |
wpa_life_histories |
113.83 | 906 | 100% | 906 | 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.