#include <stdio.h>

int main() {
//DO WHILE
    int i=-12;
    do{
        printf("%3d",i);
        i++;
    }
    while(i<=12);
    printf("\n");
//FOR
    for(i=-12;i<=12;i++){
        printf("%3d",i);
    }
//WHILE
    i=-12;
    printf("\n");
    while(i<=12){
        printf("%3d",i);
        i++;
    }
}