h,w = gets.split.map(&:to_i)

starflg = true
while cin=gets
    
    if starflg && cin=~/(-*)\*/
        x = $1.size
        if x == w-1
            cin[x-1] = '*'
        else
            cin[x+1] = '*'
        end
        starflg = false
    end
    puts cin
end