j=" ".join
i=0
while 1:
 i+=1;a=[`i`]+raw_input().split()
 while a:
	l=a;a=[]
	while len(j(l))>40:a=[l.pop()]+a
	s=~-len(l);x=0;o=l[0]
	for q in l[1:]:x+=40-len(j(l));o+=x/s*" "*(a>[])+" "+q;x%=s
	print o