Corpora: Bigram, Trigram and ???gram if N=4 ???

Jing-Shin Chang (shin@bdc.com.tw)
Tue, 22 Jul 97 22:59:48 CST

This might be a stupid question for native speakers of
English. But, after searching for the Internet and
looking up my dictionary, I still cannot be sure which
of the following terms is best for 4-gram (n-gram with n=4):

quadgram
quadragram
quadrugram
???

Any comments !? Thanks !!

Shin -^^-