#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return true; } return false; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return true; } return false; }
#define vi vector<int>
#define vl vector<ll>
#define vii vector<pair<int,int>>
#define vll vector<pair<ll,ll>>
#define vvi vector<vector<int>>
#define vvl vector<vector<ll>>
#define vvii vector<vector<pair<int,int>>>
#define vvll vector<vector<pair<ll,ll>>>
#define vst vector<string>
#define pii pair<int,int>
#define pll pair<ll,ll>
#define pb push_back
#define all(x) (x).begin(),(x).end()
#define mkunique(x) sort(all(x));(x).erase(unique(all(x)),(x).end())
#define fi first
#define se second
#define mp make_pair
#define si(x) int(x.size())
const int mod=998244353,MAX=300005,INF=15<<26;

ll H,W;

ll dis(ll x,ll y){
    ll res=0;
    {
        ll l=0,r=H,cn=0;
        while(l!=x&&r!=x){
            cn++;
            ll m=(l+r)/2;
            if(m<=x) l=m;
            else r=m;
        }
        chmax(res,cn);
    }
    {
        ll l=0,r=W,cn=0;
        while(l!=y&&r!=y){
            cn++;
            ll m=(l+r)/2;
            if(m<=y) l=m;
            else r=m;
        }
        chmax(res,cn);
    }
    return res;
}

int main(){
    
    std::ifstream in("text.txt");
    std::cin.rdbuf(in.rdbuf());
    cin.tie(0);
    ios::sync_with_stdio(false);
    
    cin>>H>>W;
    ll x,y;cin>>x>>y;
    
    if((x==0||x==H)&&(y==0||y==W)){
        cout<<0<<"\n";
        return 0;
    }
    ll gh=gcd(H,x),gw=gcd(W,y);
    
    H/=gh;
    x/=gh;
    
    W/=gw;
    y/=gw;
    
    if(H){
        for(ll t=32;t>=0;t--){
            if((1LL<<t)==H){
                break;
            }
            if(t==0){
                cout<<-1<<"\n";
                return 0;
            }
        }
    }
    if(W){
        for(ll t=32;t>=0;t--){
            if((1LL<<t)==W){
                break;
            }
            if(t==0){
                cout<<-1<<"\n";
                return 0;
            }
        }
    }
    
    vector<array<ll,4>> ans;
    
    ll D=dis(x,y);
    
    vector<pll> Z;
    Z.pb(mp(0,0));
    Z.pb(mp(0,W));
    Z.pb(mp(H,0));
    Z.pb(mp(H,W));
    while(D){
        for(auto [a,b]:Z){
            ll c=x+x-a,d=y+y-b;
            if(c<0||c>H||d<0||d>W) continue;
            //cout<<c<<" "<<d<<" "<<dis(c,d)<<endl;
            if(dis(c,d)==D-1){
                ans.pb({a,b,c,d});
                D--;
                x=c;
                y=d;
                break;
            }
        }
    }
    
    reverse(all(ans));
    
    cout<<si(ans)<<"\n";
    
    for(auto [a,b,c,d]:ans){
        cout<<a*gh<<" "<<b*gw<<" "<<c*gh<<" "<<d*gw<<"\n";
    }
    
}