#!/bin/bash
for var in 1 2 3
do
    if [ $var -eq 1 ]; then
        echo "4 5 6 7";
    fi
    if [ $var -eq 2 ]; then
        echo "  2 3  ";
    fi
    if [ $var -eq 3 ]; then
        echo "   1   ";
    fi
done