import sys, string, operator

file = open(sys.argv[1], 'r')
crypt = file.read()
file.close()
dic = {}
for char in string.uppercase:
        dic[char] = crypt.count(char)
freq = dic.items()
dic = {}
freq.sort(key=operator.itemgetter(1))
dic = {}
dic[freq[0][0]] = 'z'
dic[freq[1][0]] = 'q'
dic[freq[2][0]] = 'j'
dic[freq[3][0]] = 'x'
dic[freq[4][0]] = 'k'
dic[freq[5][0]] = 'v'
dic[freq[6][0]] = 'b'
dic[freq[7][0]] = 'p'
dic[freq[8][0]] = 'g'
dic[freq[9][0]] = 'y'
dic[freq[10][0]] = 'f'
dic[freq[11][0]] = 'w'
dic[freq[12][0]] = 'm'
dic[freq[13][0]] = 'c'
dic[freq[14][0]] = 'u'
dic[freq[15][0]] = 'l'
dic[freq[16][0]] = 'd'
dic[freq[17][0]] = 'r'
dic[freq[18][0]] = 'h'
dic[freq[19][0]] = 's'
dic[freq[20][0]] = 'n'
dic[freq[21][0]] = 'i'
dic[freq[22][0]] = 'o'
dic[freq[23][0]] = 'a'
dic[freq[24][0]] = 't'
dic[freq[25][0]] = 'e'


for key in dic.keys():
        crypt.replace(key, dic[key])

print crypt