How to auto increment the alphabet in Excel sheet

Off-Topic Discussions
1

Hi,
Can anyone help me do auto increment the alphabet in excel sheet after Z. How to increment it from there again i.e, from AA,AB,AC… etc

2

This is one way

3

Hey Hi,
Any one please help me how to auto increment the alphabet in excel sheet like A,B,…,X,Y,Z,AA,AB,AC,AD…etc