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

sky = []

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

if starflg == nil
    f = true
    sky.each{|s|
        if f && !(s=~/\*/)
            puts "*"+"-"*(w-1)
            f = false
        else
            puts s
        end
    }
else
    puts sky
end