#include <iostream>
#include <algorithm>

using namespace std;

int main(int argc, const char * argv[]) {
    int tn;
    cin >> tn;
    while (tn--) {
        int x, y;
        cin >> x >> y;
        if (abs(x - y) == 2 || (x+1)/2==(y+1)/2) {
            cout << "YES" << endl;
        } else {
            cout << "NO" << endl;
        }
    }
    return 0;
}