import Control.Applicative
import Control.Monad
import qualified Data.ByteString.Char8 as B
import Data.Maybe (fromJust)
import Text.Printf
import Debug.Trace

-- or readInteger
readInts :: B.ByteString -> [Int]
readInts = map (fst . fromJust . B.readInt) . B.words

getInts :: IO [Int]
getInts = liftM readInts B.getLine

idx p h w = (p `mod` w, p `div` w)

ps s h w = head $ filter ok [(x+dx,y+dy) | (dx,dy) <- [(-1,0),(1,0),(0,-1),(0,1)],
                              (x,y) <- [(x1,y1),(x2,y2)]]
  where
    [(x1,y1),(x2,y2)] = [idx p h (w+1) | p <- '*' `B.elemIndices` s]
    ok (x,y) = 0 <= x && x < w && 0 <= y && y < h
               && (x /= x1 || x /= x2) && (y /= y1 || y /= y2)

main = do
  [h,w] <- getInts
  s <- B.getContents
  let (x,y) = ps s h w
  let (fr, bk) = B.splitAt (y*(w+1)+x) s
  B.putStr fr
  putStr "*"
  B.putStr $ B.tail bk