#include <iostream.h>
#include <conio.h>
#include <fstream.h>
#include<stdio.h>

int code(char input[],char output[],char key[][2])
{
int string_len=strlen(input);
int key_array_len=26;
int i,k;
 for(i=0;i<string_len;i++){
 for(k=0;k<key_array_len;k++){
 if (input[i]==key[k][0]){
 output[i]=key[k][1];
//  printf("%c\n", output[i]);
 }}}
 output[i]=0;
 }
 int main(){
 char input[256];
 char output[256];
 //cin>>input;      
 fgets(input, 256, stdin);
          
  char key [][2]={       
          {'a', 'b'},
          {'b', 'c'},
          {'c', 'd'},
          {'d', 'e'},
          {'e', 'f'},
          {'f', 'g'},
          {'g', 'h'},
          {'h', 'i'},
          {'i', 'j'},
          {'j', 'k'},
          {'k', 'l'},
          {'l', 'm'},
          {'m', 'n'},
          {'n', 'o'},
          {'o', 'p'},
          {'p', 'q'},
          {'q', 'r'},
          {'r', 's'},
          {'s', 't'},
          {'t', 'u'},
          {'u', 'v'},
          {'v', 'w'},
          {'w', 'x'},
          {'x', 'y'},
          {'y', 'z'}
          };
  code (input, output, key );
  //cout << output;
  printf("%s\n", output);
  getchar();
  return 0;
}