$7.$ A number of studies were carried out to determine the characteristics and patterns of execution of machine instructions generated from HLL $($High Level Language$)$ programs. The results of these studies inspired some researchers to look for a different approach: namely, to make the architecture that supports the HL$!$ simpler, rather than more complex.What are the $3$ main characteristics$/$patterns of execution that were found that supports simpler rather than complex architectures? Also state the implication of each characteristic.$[6$ marks$]$