Numbers in an interval P97156

Statement

Write a program that reads two numbers $a$ and $b$ , and prints all numbers between $a$ and $b$ .

Input

Input consists of two natural numbers $a$ and $b$ .

Print a line with $a,a+1,\dots,b-1,b$ . Separate the numbers with commas.

Public test cases

Input

15 21

Output

15,16,17,18,19,20,21

Input

20 10

Output

Input

7 7

Output

Information