计算"*","."组成的方形中,四邻域"*"的最大面积-Farmer John purchased satellite photos of W x H pixels of his farm (1　<= W <= 80, 1 <= H <= 1000) and wishes to determine the　largest　contiguous　(connected) pasture. Pastures are contiguous when　any pair of pixels in a pasture can be connected by traversing adjacent　vertical or horizontal pixels that are part of the pasture.　(It is easy　to create pastures with very strange shapes, even circles that surround　other circles.)



Each photo has been digitally enhanced to show pasture area as an　asterisk ( * ) and non-pasture area as a period ( . ).　Here is a 10 x 5　sample satellite photo:



..*.....**

.**..*****

.*...*....

..****.***

..****.***



This photo shows three contiguous pastures of 4, 16, and 6 pixels.　Help FJ find the largest contiguous pasture in each of his satellite　photos.