#include <bits/stdc++.h>
using namespace std;
typedef long long int ll;
typedef unsigned long long int ull;

mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
ll myRand(ll B) {
    return (ull)rng() % B;
}

const ll MX=1e18;

void print_res(vector<ll> res){
	printf("%d\n",res.size());
	for(ll p:res){
		printf("%lld ",p);
	}
	printf("\n");
}

int main(){
	cin.tie(nullptr);
	ios::sync_with_stdio(false);
	int q; cin >> q;
	while(q--){
		ll a,b;
		cin >> a >> b;
		// a=myRand(MX); b=myRand(MX);
		if(a>b)swap(a,b);
		vector<ll> res;
		ll p=1;
		while(b-a>0 and res.size()<120){
			while(a%p==0)p*=2;
			p/=2;
			if(b-a>=p){
				a+=p;
				res.push_back(p);
			}
			else{
				while(1){
					if((b-a)&p){
						a+=p;
						res.push_back(p);
						break;
					}
					else{
						p/=2;
					}
				}
			}
		}
		assert(a==b);
		assert(res.size()<=120);
		print_res(res);
	}
}