import java.util.Arrays;
import java.util.Scanner;

public class Test {
	public static Scanner sc = new Scanner(System.in);

	public static void main(String[] args) {
		int idx = 0;
		for (int i = 0; i < 4; i++) {
			for (int j = 0; j < 4; j++) {
				if (i == j)
					continue;
				for (int k = 0; k < 4; k++) {
					if (i == k)
						continue;
					if (j == k)
						continue;
					for (int l = 0; l < 4; l++) {
						if (i == l)
							continue;
						if (j == l)
							continue;
						if (k == l)
							continue;
						p[idx][0] = i;
						p[idx][1] = j;
						p[idx][2] = k;
						p[idx][3] = l;
						idx++;
					}
				}
			}
		}
		chk();
	}

	public static int[] b = new int[4];
	public static int[] c = new int[4];
	public static boolean[] t = new boolean[10];
	public static int[][] p = new int[24][4];

	public static void chk() {
		int hit, blw;
		for (b[0] = 0; b[0] < 7; b[0]++) {
			for (b[1] = b[0] + 1; b[1] < 8; b[1]++) {
				for (b[2] = b[1] + 1; b[2] < 9; b[2]++) {
					for (b[3] = b[2] + 1; b[3] < 10; b[3]++) {
						System.out.println("" + b[0] + b[1] + b[2] + b[3]);
						hit = sc.nextInt();
						blw = sc.nextInt();
						if (hit == 4) {
							return;
						} else if (hit + blw == 4) {
							chk4();
							return;
						} else if (hit + blw == 3) {
							Arrays.fill(t, false);
							chk3();
							return;
						} else if (hit + blw == 0) {
							Arrays.fill(t, false);
							chk0();
							return;
						}
					}
				}
			}
		}
	}

	public static void chk0() {
		int hit, blw;
		for (int i = 0; i < 4; i++) {
			c[i] = b[i];
			t[b[i]] = true;
		}
		for (b[0] = c[0] + 1; b[0] < 7; b[0]++) {
			if (t[b[0]])
				continue;
			for (b[1] = b[0] + 1; b[1] < 8; b[1]++) {
				if (t[b[1]])
					continue;
				for (b[2] = b[1] + 1; b[2] < 9; b[2]++) {
					if (t[b[2]])
						continue;
					for (b[3] = b[2] + 1; b[3] < 10; b[3]++) {
						if (t[b[3]])
							continue;
						System.out.println("" + b[0] + b[1] + b[2] + b[3]);
						hit = sc.nextInt();
						blw = sc.nextInt();
						if (hit == 4) {
							return;
						} else if (hit + blw == 4) {
							chk4();
							return;
						} else if (hit + blw == 3) {
							chk3();
							return;
						}
					}
				}
			}
		}
	}

	public static void chk3() {
		int hit, blw;
		for (int i = 0; i < 4; i++) {
			c[i] = b[i];
			t[c[i]] = true;
		}
		for (int i = 0; i < 4; i++) {
			for (int j = c[i] + 1; j < 10; j++) {
				if (t[j])
					continue;
				b[i] = j;
				System.out.println("" + b[0] + b[1] + b[2] + b[3]);
				hit = sc.nextInt();
				blw = sc.nextInt();
				if (hit == 4) {
					return;
				} else if (hit + blw == 4) {
					chk4();
					return;
				} else if (hit + blw == 2) {
					break;
				}
			}
			b[i] = c[i];
		}
	}

	public static void chk4() {
		int hit, blw;
		for (int i = 0; i < 4; i++) {
			c[i] = b[i];
		}
		for (int i = 1; i < 24; i++) {
			for (int j = 0; j < 4; j++) {
				b[j] = c[p[i][j]];
			}
			System.out.println("" + b[0] + b[1] + b[2] + b[3]);
			hit = sc.nextInt();
			blw = sc.nextInt();
			if (hit == 4) {
				return;
			}
		}
	}
}