N,W,H=map(int,input().split())
S=input().split("l")
a=["" for _ in range(W)]
for w in range(W):
 if w<len(S):s=S[w];a[w]="x"*(H-len(s))+s
 else:a[w]="x"*H
for t in zip(*a):
 print("".join(t))