# your code goes here
x = raw_input()
res = []
for i in range(0, len(x), 3):
res.append(x[i:i+3])
uni = set(res)
alpha = 'abcdefghijklmnopqrstuvwxyz'
both = dict(zip(uni, alpha[:len(uni)]))
rs = [both[i] for i in res]
print ''.join(rs)
IyB5b3VyIGNvZGUgZ29lcyBoZXJlCnggPSByYXdfaW5wdXQoKQpyZXMgPSBbXQpmb3IgaSBpbiByYW5nZSgwLCBsZW4oeCksIDMpOgogICAgcmVzLmFwcGVuZCh4W2k6aSszXSkKCnVuaSA9IHNldChyZXMpCmFscGhhID0gJ2FiY2RlZmdoaWprbG1ub3BxcnN0dXZ3eHl6Jwpib3RoID0gZGljdCh6aXAodW5pLCBhbHBoYVs6bGVuKHVuaSldKSkKCnJzID0gW2JvdGhbaV0gZm9yIGkgaW4gcmVzXQpwcmludCAnJy5qb2luKHJzKQ==