#include "bits/stdc++.h"

using namespace std;

#ifndef ONLINE_JUDGE

#include "test.h"

#else
#define debug(...) 42
#define debug_assert(...) 42
#endif


#define IOS ios::sync_with_stdio(0),cin.tie(0)

using ll = long long;
using ull = unsigned long long;

#define endl '\n'
#define int ll

using VI = vector<int>;
using VII = vector<VI>;
using PII = pair<int, int>;
const int inf = 1e18;
const int mod = 1e9 + 7;

void init() {

}


map<pair<int, int>, int> mp;

int get(int l, int r) {
 
    if (l == 0 && r == 0)return 1ll;
    if (l / 3 == r / 3) {
        int ans = get(l / 3, r / 3) + 1 + r % 3;
        if (r < 3)ans--;
   
        return ans;
    }
    if (l > r)return 0ll;

    int ls = get(l / 3, l / 3) + 3;
    if(l<3)ls--;
    int rs = get(r / 3, r / 3)  +1+ r % 3;
    if(r<3)rs--;
    l = l / 3 + 1;
    r = r / 3 - 1;
    return max({ls, rs, get(l, r)});
}

void solve() {
    int l, r;
    cin >> l >> r;


    int ans = get(l, r);
    cout << ans << endl;
}

signed main() {
    IOS;
    init();
    // debug(1);
    int t = 1;
    cin >> t;
    while (t--) {
        solve();
    }
}
//3
// 3
// 4
// 5
// 3
// 4
// 5
// 4
// 5
// 5