ok so I name them Bob, Joe, and Harry
if total perimiter=14 then
Bob has legnth of 1 and width of 1
Joe has legnth of 1 and width of 1
Harry has legnth of 2 and width of 1
if each rectangle has perimiter of 14 then
Bob has legnth of 4 and width of 3
Joe has legnth of 5 and width of 2
Harry has legnth of 6 and width of 1