#!perl -ln0
map{$i=$-[0]+11;{map{1while
s/w((?<=W.{10})|(?<=W.)|(?=.{9}W|W))/W/s;/W((?<= .{10})|(?<= .)|(?=.{9} | ))/s||$i=~/./+print("$& $'")+last}"$`W$'"while/w/g}}"$`x$'"while/ /g