#!/usr/bin/env bash

for b in $(seq 0 7) 9; do
    echo
    for f in $(seq 0 7) 9; do
        printf " \033[0;1;3${f};4${b}m 3${f}\033[0;3${f};4${b}m 4${b} \033[0m "
    done
    echo
done
echo