"Phrases in English" BNC
Phrase-Frame Drill-Down Search

Phrase-frame to find

n-gram drill-down

Enter a regular expression pattern matching 1-8 words
notes & explanation
Insert Regular Expression codes
Start Word End Word Start Phrase End Phrase
Wildword Any Alpha Any Char
Match 0 or more times 0 or 1 times 1 or more times

detailed RegEx help

Options Range of n   to words
Minimum frequency

Show phrases representing at least:
% of top-level node or % of parent node


Drill-down queries find "expansions" or longer phrase-frames incorporating query terms.  The results indicate the number and percentage of occurrences of each phrase represented by specific longer phrases. They also help detect the boundaries of recurrent phrases.

By default drill-down queries return expansions both right and left of the query term. To restrict the direction, insert start / end of phrase tags: 

Drill-down sums all counts of a given string, ignoring PoS tags.  Consequently frequencies may be greater than those reported by other query types where the same sequence of words received various taggings.