#include <bits/stdc++.h>
using namespace std;
static const int INF = 500000000;
template <class T>
void debug(T a, T b) {
  for (; a != b; ++a) cerr << *a << ' ';
  cerr << endl;
}
template <class T>
void chmin(T& a, const T& b) {
  if (a > b) a = b;
}
template <class T>
void chmax(T& a, const T& b) {
  if (a < b) a = b;
}
string s, t;
bool check() {
  cin >> s;
  t = s;
  reverse((t).begin(), (t).end());
  if (t != s) return false;
  for (int i = 0; i < (s.size()); ++i) {
    if (s[i] == 'A' || s[i] == 'H' || s[i] == 'I' || s[i] == 'M' ||
        s[i] == 'O' || s[i] == 'T' || s[i] == 'U' || s[i] == 'V' ||
        s[i] == 'W' || s[i] == 'X' || s[i] == 'Y')
      ;
    else
      return false;
  }
  return true;
}
int main() {
  if (check())
    puts("YES");
  else
    puts("NO");
  return 0;
}
