static void Main(string[] args)
{
string[] input = Console.ReadLine().Split(' ');
string[] total = new string[int.Parse(input[0])];
for (int i = 0; i < total.Length; i++)
total[i] = Console.ReadLine();
Regex r = new Regex("[*]");
int xMin = 0;
int xMax = 0;
for (int i = 0; i < total.Length; i++)
{
if (total[i].Contains("*"))
{
xMin = i;
break;
}
}
for (int i = total.Length - 1; i >= 0; i--)
{
if (total[i].Contains("*"))
{
xMax = i;
break;
}
}
int min = 1000000;
int max = 0;
for (int i = 0; i < total.Length; i++)
{
if (total[i].Contains("*"))
{
List<int> indices = new List<int>();
foreach (Match m in r.Matches(total[i]))
indices.Add(m.Index);
if (indices[0] < min)
min = indices[0];
if (indices[indices.Count - 1] > max)
max = indices[indices.Count - 1];
}
}
List<string> result = new List<string>();
for (int i = xMin; i <= xMax; i++)
result.Add(total[i].Substring(min, (max - min) + 1));
for (int i = 0; i < result.Count; i++)
Console.WriteLine(result[i]);
Console.ReadLine();
}
