n, k = map(int, input().split())
for i in range(0,n):
	cols = input()
	row = ''
	for j in range(0,n):
		one = cols[j]
		dup = ''
		for x in range(0,k):
			dup = dup + one
		row = row + dup
	for x in range(0,k):
		print(row)