 Paralinguistic features are only roughly indicated.Despite being an excellent source of lexical information, the BNC can only really be used to study a limited set of grammatical patterns, particularly those which have distinctive lexical correlates.While it is easy enough to find all the occurrences of "enjoy", and to sort them according to the part-of-speech category of the following word, it requires additional work to find all cases of verbs followed by a gerund, since the SARA index of the BNC does not include part-of-speech categories such as "all verbs" or "all V-ing forms".