iiitv/ChefLib

// Code written by Monal
#include"bits/stdc++.h"
#include<stdio.h>

using namespace std;

int main() {
    int tc;
    scanf("%d",&tc);
    while(tc--) {
        long long int a,b;
        scanf("%lld%lld",&a,&b);
        if(abs(a-b)==2)
            printf("YES\n");
        else if(a%2==1)
        {
            a--;
            a=a/2;
            if(b==2*a+2)
                printf("YES\n");
            else
                printf("NO\n");
        }
        else if(b%2==1)
        {
            b--;
            b=b/2;
            if(a==2*b+2)
                printf("YES\n");
            else
                printf("NO\n");
        }
        else
            printf("NO\n");
    }
    return 0;
}