For each top-level word or phrase (i.e. of the minimum value of n), expanded phrases with a minimum frequency of 20 which account for at least 5% of the parent node's occurrences or 0.1% or top-level node's occurrences are displayed in KWiC layout. These frequency criteria can be modified on the query page.
5 columns of numbers follow:

1. frequency of the phrase
2. % of parent node's frequency
3. cumulative % of column 2 for left-expanding phrases (> if not applicable)
4. cumulative % of column 2 for right-expanding phrases (< if not applicable)
5. % of top-level node's frequency

Phrases which account for 5% or more of the occurrences of the top-level node are highlighted in  increasingly   intense   shades   of   red. 
Those representing 10% or more of their parent nodes' occurrences appear in  increasingly   intense   shades   of   green. 
Hover the cursor over a phrase to see its parent node and frequency.
Click on a phrase to see concordances from the BNC.