I am trying to determine whether or not 26 blanks occur in succession in a row. Two example rows of data are listed below, where "_" refers to a blank cell:

2 _ _ 3 _ _ _ _ _ _ _ 4 5 6 3 4 _ _ _ _ _ 4
_ _ _ _ _ _ 7 8 13 2 3 _ _ _ _4 5 6 11 10 2

Hopefully you can picture the data from above. Anyway, there are multiple locations where a string of blanks occur. I'm looking for a formula that can test as to whether or not a certain number of blanks occur in succession during any part of the row.

Any help would be much appreciated! Thanks!