Yes there is and it seems you put a recognised operator at the end, to specify the part of grammar you are interested in.. I need about a day to familiarise myself with the literature. I do not use N-gram myself.
this is an experiment with a result that should never occur which it didn't
I think this shows the word verb with if or should but there is a way to specify the usage.
I believe you have to play around with these tags and the wildcard tag *
if * = if plus common.
the tag list:
_NOUN_These tags can either stand alone (_PRON_)
or can be appended to a word (she_PRON)
_DET_determiner or article
_ADP_an adposition: either a preposition or a postposition
_ROOT_root of the parse treeThese tags must stand alone (e.g., _START_)_START_start of a sentence_END_end of a sentence
[this means type in _uppercase recognised tag stand alone or not, like for computer programming using super globals]
you have to type _VERB whatever you are interested in, with the underline at the front _DET etc
And in any case you will get views now there is one view up here for others to follow, that's what humans do.
This is assuming google n-gram and not Stanford university or other similar n-gram tools.