Base difficulty: Level 18 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 |
|---|---|---|
basic_english |
Basic (1 of 2) | 600 |
cambridge_yle |
Movers (2 of 3) | 750 |
cefr |
A1 (1 of 6) | 800 |
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 |
307.36 | 284 | 80% | 355 downrated | 1 |
20th_books |
217.72 | 379 | 80% | 474 downrated | 1 |
wiki_math |
76.47 | 1289 | 80% | 1611 downrated | 1 |
wiki_geography |
557.74 | 146 | 80% | 182 downrated | 1 |
wiki_biology |
320.60 | 283 | 80% | 354 downrated | 1 |
wiki_modern_life |
211.72 | 445 | 80% | 556 downrated | 1 |
wiki_arts |
171.50 | 585 | 80% | 731 downrated | 1 |
wiki_society |
112.96 | 956 | 80% | 1195 downrated | 1 |
wiki_linguistics |
122.15 | 871 | 80% | 1089 downrated | 1 |
wiki_physical_science |
367.80 | 268 | 80% | 335 downrated | 1 |
wiki_history |
285.53 | 300 | 80% | 375 downrated | 1 |
early_modern_science |
377.38 | 215 | 80% | 269 downrated | 1 |
religious_translated |
239.32 | 366 | 80% | 458 downrated | 1 |
cooking |
45.06 | 1654 | 80% | 2068 downrated | 1 |
legal_scotus |
36.58 | 2523 | 80% | 3154 downrated | 1 |
eu_parliament_debates |
43.75 | 1932 | 80% | 2415 downrated | 1 |
openstax_science |
199.69 | 553 | 80% | 691 downrated | 1 |
openstax_society |
116.63 | 971 | 80% | 1214 downrated | 1 |
wpa_life_histories |
490.31 | 195 | 80% | 244 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.