I need to create an abbreviated 4 character prefix from a list of names. All abbrevations need to be unique.
For example, some of the names are almost identical:
XYZ Childcare Centre
XYZ Childcare Centre Pty Ltd
XYZ Child Care Creche
Toyota Car Dealer
Toyota Motor Dealer
Brisbane Toyota Motor Dealer
How do I go about creating unique 4 character prefixes from any name, similar to others, or not?