What does WBS mean in texting?

AMERICAN Bank CMRC 6 AMERICAN CMRL B&TC National Association 5 BMW Bank OF NORTH AMER 28 Boelus State Bank 4 Buckeye Community Bank 6 DART Bank 18 FIRST CENTURY Bank 9 FIRST COMMONWEALTH Bank 16 Founders Bank 9 Grinnell State Bank 11 Magnolia Bank 14 Midwest Regional Bank 8 NEBRASKALAND Bank 19 Putnam County State Bank 6 Raccoon Valley Bank 5 River Falls State Bank 4 Stryv Bank 6 Twin Cedars Bank 5 Williamstown Bank, Inc. 7 Winnsboro State Bank & Trust 7