nn-search is a simple application for searching words using their part-of-speech tags. For example, it can find a chain of tags like "DT NN VB" that may correspond to such sentences in a text as "a tree grows" or "the dog barks". It can also search words within a certain range, "magic flowers{5}". You can search POS-tags within a range as well, you can make combinations of tags, words and ranges, isn't it cool?