The Full form of SUM1 is someone, or SUM1 stands for someone, or the full name of given abbreviation is someone.
SUM1 (someone)
someone is known as SUM1.
SUM1 all full forms
All the above full forms are related to SUM1. A little information is given about one of these full forms. If you are not satisfied with the information given about 'someone (SUM1)', then comment. Or if you know more about 'someone (SUM1)', then write.
