flag=1
while flag:
	s=map(str,raw_input().strip().split())
	a=s[0]
	b=int(s[1])
	if a!="@":
		for i in range(1,b+1):
			if i==1:
				print (b-1)*" "+a
			elif i==b:
				print (2*i-1)*a
			else:
				print " "*(b-i)+a+" "*(2*i-3)+a
	else:
		flag=0
	print