#!/bin/bash


clear

firstelement=$1

numberelements=$2

dr=$3

apgp=$4

counter=1

result=$firstelement

while [ "$counter" -le "$numberelements" ]
do
	echo $result
	let counter=counter+1
	
	if [ "$apgp" = "ap" ] || [ "$apgp" = "AP" ] || [ "$apgp" = "Ap" ] || [ "$apgp" = "aP" ] ; then

		let result=result+dr

        elif [ "$apgp" = "gp" ] || [ "$apgp" = "GP" ] || [ "$apgp" = "Gp" ] || [ "$apgp" = "gP" ] ; then
		
		let result=result*dr
	else
		echo "bad AP or GP"
		let counter=numberelements+1		
	fi
done



echo "Thank you for playing"