import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;

public class Problem3 {

	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
		// BufferedReader br = new BufferedReader(new InputStreamReader(new
		// FileInputStream("DATA31.txt")));
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		for (int x = 0; x < 10; x++) {
			String[][] temp = new String[16][16];
			int[][] m = new int[16][16];
			int count = 0;
			for (int i = 0; i < 16; i++) {
				temp[i] = br.readLine().split("");
			}
			for (int i = 0; i < m.length; i++) {
				for (int j = 0; j < m.length; j++) {
					if (temp[i][j].equals("-")) {
						m[i][j] = -1;
					} else {
						m[i][j] = Integer.parseInt(temp[i][j], 16);
					}
				}
			}

			for (int i = 0; i < m.length; i++) {
				for (int j = 0; j < m.length; j++) {
					if (m[i][j] == -1) {
						for (int k = 0; k < 16; k++) {
							boolean flag = true;
							for (int l = 0; l < 16; l++) {
								if (m[i][l] == k) {
									flag = false;
									break;
								} else if (m[l][j] == k) {
									flag = false;
									break;
								}
							}
							int xQuad = (int) Math.ceil(i / 4);
							int yQuad = (int) Math.ceil(j / 4);
							for (int l = 0; l < 4 && flag; l++) {
								for (int n = 0; n < 4; n++) {
									if (m[l + xQuad * 4][n + yQuad * 4] == k) {
										flag = false;
										break;
									}
								}
							}
							if (!flag) {
								continue;
							} else {
								m[i][j] = k;
								count++;
								break;
							}
						}

					}
				}
			}
			System.out.println(count);
		}
		br.close();
	}

}