import sys input = lambda: sys.stdin.readline().rstrip() from collections import defaultdict as dd N=input() cnt=dd(int) b="" for a in N: b+=str(format(int(a,16),'b')) n=len(b) i=0 while i<n: num=int(b[max(n-i-3,0):n-i],2) cnt[num]+=1 i+=3 ans=[] maxval=0 for i in range(1,8): if maxval==cnt[i]: ans.append(i) elif maxval<=cnt[i]: ans.clear() ans.append(i) maxval=cnt[i] print(*ans)