public class NumberPuzzlesIV {
public static void main (String[] args) {
for (int a = 0; a <= 12; a++) {
for (int b = 0; b <= 12; b++) {
for (int c = 0; c <= 12; c++) {
for (int d <= 0; d <= 12; d++) {
if (((a + 2) == (b - 2)) && ((b - 2) == (c * 2)) && ((c * 2) == (d / 2))) {
if ((a + b + c + d) == 45) {
System.out.println(a + ", " + b + ", " + c + ", " + d)
}
}
}
}
}
}
}
}