s = input()
n = len(s)
for i in range(1, 1 << n):
ans = ""
for j in range(n):
if (i >> j) & 1:
ans += s[j]
print(ans)# your code goes here
cyA9IGlucHV0KCkKbiA9IGxlbihzKQoKZm9yIGkgaW4gcmFuZ2UoMSwgMSA8PCBuKToKICAgIGFucyA9ICIiCiAgICBmb3IgaiBpbiByYW5nZShuKToKICAgICAgICBpZiAoaSA+PiBqKSAmIDE6CiAgICAgICAgICAgIGFucyArPSBzW2pdCiAgICBwcmludChhbnMpIyB5b3VyIGNvZGUgZ29lcyBoZXJl