#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <utility>
#include <map>
#include <atcoder/modint>

using namespace std;
using i32 = int32_t;
using u32 = uint32_t;
using i64 = int64_t;
using u64 = uint64_t;
#define rep(i,n) for(int i=0; i<(int)(n); i++)

using Modint = atcoder::static_modint<998244353>;
const i64 INF = 1001001001001001001;

struct NAND{ int a; };
NAND operator|(NAND l, NAND r){ return {!(l.a&r.a)}; }

int main(){
    string C[6]; rep(i,6) cin >> C[i];
    map<string, int> Q;
    int I[6] = {};
    rep(i,6){
        if(!Q.count(C[i])) Q.insert({ C[i], Q.size() });
        I[i] = Q[C[i]];
    }

    bool ok = false;
    rep(j,1<<6){
        NAND K[6];
        rep(i,6) K[i] = { (j>>I[i])&1 };
        if((((K[0] | K[1]) | K[2]) | ((K[3] | K[4]) | K[5])).a) ok = true;
    }

    cout << (ok ? "Yes\n" : "No\n");
    return 0;
}


struct ios_do_not_sync{
    ios_do_not_sync(){
        std::ios::sync_with_stdio(false);
        std::cin.tie(nullptr);
    }
} ios_do_not_sync_instance;