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 |
18.59 | 4146 | 100% | 4146 | 1 |
20th_books |
19.14 | 3955 | 100% | 3955 | 1 |
wiki_math |
46.20 | 2134 | 100% | 2134 | 1 |
wiki_geography |
240.10 | 520 | 100% | 520 | 1 |
wiki_biology |
185.45 | 728 | 100% | 728 | 1 |
wiki_modern_life |
122.37 | 1183 | 100% | 1183 | 1 |
wiki_arts |
207.80 | 606 | 100% | 606 | 1 |
wiki_society |
173.14 | 751 | 100% | 751 | 1 |
wiki_linguistics |
178.42 | 739 | 100% | 739 | 1 |
wiki_physical_science |
121.24 | 1212 | 100% | 1212 | 1 |
wiki_history |
346.59 | 314 | 100% | 314 | 1 |
early_modern_science |
0.00 | — | — | — | 0 |
religious_translated |
0.00 | — | — | — | 0 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
162.72 | 811 | 100% | 811 | 1 |
eu_parliament_debates |
184.86 | 644 | 100% | 644 | 1 |
openstax_science |
89.35 | 1541 | 100% | 1541 | 1 |
openstax_society |
260.83 | 505 | 100% | 505 | 1 |
wpa_life_histories |
22.41 | 3536 | 100% | 3536 | 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.