#!perl
$_=++$/x11 .<>;map{$i=$-[0];{map{1while
s/w((?<=W.{10})|(?<=W.)|(?=.{9}W|W))/W/s;/W((?<= .{10})|(?<= .)|(?=.{9} | ))/s||$i=~/./+print("$& $'\n")+last}"$`W$'"while/w/g}}"$`x$'"while/ /g