#include <bits/stdc++.h>
using namespace std;
char s[100009];
int a[228];
int main() {
  int i;
  a['b'] = 0;
  a['p'] = 1;
  a['d'] = 2;
  a['q'] = 3;
  scanf("%s", s + 1);
  for (i = strlen(s + 1), i = 1; i <= (i >> 1) + 1; i++) {
    if (a[s[i]] ^ ((a[s[i - i + 1]] + 2) % 4)) {
      cout << "No" << endl;
      return 0;
    }
  }
  cout << "Yes" << endl;
  return 0;
}
