public class Anidada1 {

    public static void main(String []args) {
	int i,j;

	i = 0;
	while (i < 4) {
	    j = 0;
	    while (j < 3) {
		System.out.println("i=" + i + " j=" + j);
		j = j + 1;
	    }
	    i = i + 1;
	}
    }
}