Long explanation, simple to do... keep reading
You need to work with 2 formulas to be able to sort:
Lets say your data goes from A2:A202. I will give you the formula for A2 and then you copy it to the rest of cells
EXTRACT THE LAST TWO CHARACTERS:
• use the RIGHT function it will extract the right most character from a character string
= RIGHT( source_string, number_of_characters)
On cell B2 write this formula
=right(A2,2)
EXTRACT THE FIRST FOUR CHARACTERS:
use the LEFT function it will extract the left most character from a character string
= LEFT(source_string, number_of_characters)
On cell C2 write this formula
=LEFT(A2,4)
SORTING YOUR DATA
Now you can sort your data, using the values calculate on Column B (last 2 characters) and C (first 4 characters)
For a tutorial on how to sort the data, check
• Excel 2007 http://www.homeandlearn.co.uk/excel2007/excel2007s3p1.html
• Excel 2003 http://excel.tips.net/Pages/T002708_Sorting_a_Range_of_Cells.html
Hope this help