#include <bits/stdc++.h>
using namespace std;
const long double Eps = 1e-8;
char what[27] = "A??????HI???M?O????TUVWXY?";
char str[100005];
void input() { scanf("%s", str); }
bool good() {
  int N = strlen(str);
  for (int i = 0; i < N; i++) {
    if (str[i] != what[str[N - i - 1] - 'A']) return false;
  }
  return true;
}
int main() {
  input();
  printf(good() ? "YES\n" : "NO\n");
}
