#include using namespace std; using ll = long long; #define rep(i, n) for (int i = 0; i < (int)(n); i++) #define all(c) begin(c), end(c) #define dump(x) cerr << __LINE__ << ":\t" #x " = " << x << endl set> es; bool solve(int a, int b, int c, int m){ int k = 2; es.clear(); vector as, bs, cs; rep(i, a - 1) as.push_back(k++); rep(i, b - 1) bs.push_back(k++); // assert((a && b) || (!a && !b)); if(!c){ if(!a || !b) return false; as.push_back(0); bs.push_back(1); } else { if(!a && !b && c == 1) return false; if(a) as.push_back(0); else cs.push_back(0); if(b) bs.push_back(1); else cs.push_back(1); rep(i, c - !a - !b) cs.push_back(k++); } sort(all(as)); sort(all(bs)); sort(all(cs)); dump(a); dump(b); dump(c); // for(auto &e : as) cout << e << ' '; // cout << endl; // for(auto &e : bs) cout << e << ' '; // cout << endl; // for(auto &e : cs) cout << e << ' '; // cout << endl; // assert((int)cs.size() == c); rep(i, a - 1) es.emplace(as[i], as[i+1]); rep(i, b - 1) es.emplace(bs[i], bs[i+1]); rep(i, c - 1) es.emplace(cs[i], cs[i+1]); if(a && c) es.emplace(0, cs[0]); if(b && c) es.emplace(1, cs[0]); if(!a && !b) es.emplace(0, 1), es.emplace(1, 0); return (int)es.size() <= m; // auto fill_v = [&](const vector &vs){ // rep(i, vs.size()) rep(j, i){ // if(m && !g[vs[i]][vs[j]]) g[vs[i]][vs[j]] = true, --m; // } // }; // auto fill_vw = [&](const vector &vs, const vector &ws){ // rep(i, vs.size()) rep(j, ws.size()){ // if(m && !g[vs[i]][ws[j]]) g[vs[i]][ws[j]] = true, --m; // } // }; // fill_v(as); // fill_v(bs); // fill_v(cs); // fill_vw(as, cs); // fill_vw(bs, cs); } int main(){ int A, B, C, D; while(cin >> A >> B >> C >> D){ int a = A - C; int b = B - C; if(solve(a, b, C, D)){ int n = a + b + C; int m = es.size(); cout << n << ' ' << m << '\n'; for(auto &e : es) cout << e.first << ' ' << e.second << '\n'; } else puts("-1"); } }