Mr. Benum is assigning his class into groups for a large assignment. There are 3 groups and the group a person is placed into depends on the first letter of their last name. If the first letter is between A-I, they are to be placed in group 1. If the letter is between J-S they are in group 2. Otherwise, they are assigned to group 3. Given a student's last name, determine their group.

Input

The only line of input is the student's last name beginning with a capital letter followed by 1 or more lowercase letters.

Output

Print Group 1., Group 2. or Group 3. depending on the student.

Sample Input

Corey

Sample Output

Group 1.