There are but I could not find many details about them in English. Some of the well knowns are: すもももももももものうち or ははははははははのははははははとわらった Please see MeCab (https:/

There are but I could not find many details about them in English. Some of the well knowns are: すもももももももものうち or ははははははははのははははははとわらった Please see MeCab (https://en.wikipedia.org/wiki/MeCab https://en.wikipedia.org/wiki/MeCab) segmentation output below: http://www.edrdg.org/~jwb/cgi-bin/mecabdisp?sent=%E3%81%99%E3%82%82%E3%82%82%E3%82%82%E3%82%82%E3%82%82%E3%82%82%E3%82%82%E3%82%82%E3%81%AE%E3%81%86%E3%81%A1 http://www.edrdg.org/~jwb/cgi-bin/mecabdisp?sent=%E3%81%99%E... http://www.edrdg.org/~jwb/cgi-bin/mecabdisp?sent=%E3%81%AF%E3%81%AF%E3%81%AF%E3%81%AF%E3%81%AF%E3%81%AF%E3%81%AF%E3%81%AF%E3%81%AE%E3%81%AF%E3%81%AF%E3%81%AF%E3%81%AF%E3%81%AF%E3%81%AF%E3%81%A8%E3%82%8F%E3%82%89%E3%81%A3%E3%81%9F%0D%0A http://www.edrdg.org/~jwb/cgi-bin/mecabdisp?sent=%E3%81%AF%E...