#include <bits/stdc++.h>
#define int long long
using namespace std;
 
void solve() {
    int n,k;
    cin >> n>>k;
    map<int,int> mp;
    vector<int> v(n);
    for(int i=0;i<n;i++){
    	cin>>v[i];
    }
    sort(v.begin(),v.end());
    for(int i=0;i<n;i++){
    	if(mp.find(v[i]-k)!=mp.end()){
    		cout<<"YES"<<endl;
    		return;
    	}
    	mp[v[i]]++;
    }
    cout<<"NO"<<endl;
 
 
}
 
signed main() {
    int t;
    cin >> t;
    while (t--) {
        solve();
    }
    return 0;
}
 

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