#include <stdio.h>

int main(int argc, char *argv[])
{

//for (int i=0;i<=256;i++)

   //printf("\x1b[%im Hello World!\n \033[0m",i);
  for (int green = 0;green < 6; green++) {
    for (int red = 0; red < 6; red++) {
	for (int blue = 0; blue < 6; blue++) {
	    int color = 16 + (red * 36) + (green * 6) + blue;
	    printf( "\x1b[48;5;%dm H ",color);
	}
	printf( "\x1b[0m");
    }
    printf( "\n");
}


    return 0;
};