//A tree without skin will surely die.
//A man without face is invincible.
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <bits/stdc++.h>

#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define sz(S) ((int)S.size())
#define FOR(i, st_, n) for(int i = st_; i < n; ++i)
#define RFOR(i, n, end_) for(int i = (n)-1; i >= end_; --i)
#define x first
#define y second
#define pb push_back
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;
typedef pair<double, double> pdd;
typedef unsigned long long ull;
typedef long double LD;
typedef pair<ull, ull> pull;
using namespace __gnu_pbds;
typedef tree<ll, null_type, less<>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;
using namespace std;
#ifdef ONPC
mt19937 rnd(228);
#else
mt19937 rnd(chrono::high_resolution_clock::now().time_since_epoch().count());
#endif

std::map<char, std::string> MC = {
    {'A', ".-"},   {'B', "-..."}, {'C', "-.-."}, {'D', "-.."},  {'E', "."},    
    {'F', "..-."}, {'G', "--."},  {'H', "...."}, {'I', ".."},   {'J', ".---"}, 
    {'K', "-.-"},  {'L', ".-.."}, {'M', "--"},   {'N', "-."},   {'O', "---"},  
    {'P', ".--."}, {'Q', "--.-"}, {'R', ".-."},  {'S', "..."},  {'T', "-"},    
    {'U', "..-"},  {'V', "...-"}, {'W', ".--"},  {'X', "-..-"}, {'Y', "-.--"}, 
    {'Z', "--.."}, {'0', "-----"},{'1', ".----"},{'2', "..---"},{'3', "...--"},
    {'4', "....-"}, {'5', "....."}, {'6', "-...."}, {'7', "--..."}, {'8', "---.."}, 
    {'9', "----."}
};

int solve()
{
	string s;
	if(!(getline(cin, s)))
	{
		cout<<"NO\n";
		return 1;
	}
	string t;
	bool bad=true;
	for(auto ch: s)
	{
		if(ch>='a' && ch <= 'z') t += MC[char(ch-'a'+'A')], bad=false;
		else if(ch>='A' && ch <= 'Z') t += MC[ch], bad=false;
		else if(ch>='0' && ch <= '9') t += MC[ch], bad=false;
	}
	bool pal=true;
	FOR(i,0,sz(t))
	{
		if(t[i]!=t[sz(t)-1-i])pal=false;
	}
	if(!bad && pal)cout<<"YES\n";
	else cout<<"NO\n";
    return 1;
}

int32_t main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    int TET = 1e9;
    //cin >> TET;
    for (int i = 1; i <= TET; i++)
    {
        if (solve())
        {
            break;
        }
#ifdef ONPC
        cout << "__________________________" << endl;
#endif
    }
#ifdef ONPC
    cerr << endl << "finished in " << clock() * 1.0 / CLOCKS_PER_SEC << " sec" << endl;
#endif
}