#include <bits/stdc++.h>

void solve() {
    int n;
    std::cin >> n;
    int x = 0;
    std::vector<int> a(n);
    for (int i = 0; i < n; i++) {
        std::cin >> a[i];
        x ^= a[i];
    }
    if (x) {
        std::cout << "YES\n";
        std::cout << 2 << "\n";
        std::cout << 1 << " " << 1 << "\n";
        std::cout << 2 << " " << n << "\n";
        return;
    }
    x = 0;
    int firstNonZero = -1;
    for (int i = 0; i < n; i++) {
        if (a[i] != 0) {
            firstNonZero = i;
            break;
        }
    }
    if (firstNonZero == -1) {
        std::cout << "NO\n";
        return;
    }
    for (int i = firstNonZero + 1; i < n; i++) {
        x ^= a[i];
        if (x != a[firstNonZero] && x != 0) {
            std::cout << "YES\n";
            std::cout << 3 << "\n";
            std::cout << 1 << " " << firstNonZero + 1 << "\n";
            std::cout << firstNonZero + 2 << " " << i + 1 << "\n";
            std::cout << i + 2 << " " << n << "\n";
        }
    }
    std::cout << "NO\n";
}

int main() {
    std::ios_base::sync_with_stdio(false);
    std::cin.tie(nullptr);

    int t;
    std::cin >> t;
    while (t--) {
        solve();
    }

    return 0;
}