Code clones are similar program structures recurring in variant forms in software system(s). Several techniques have been proposed to discover simple clones i.e., method level clones. But identifying structural clones has been a difficult task because this requires am iterative scan of the database. Structural clones show a bigger picture of simple clones. Hence identification of the structural level clones improves the performance of the system under development by enhancing the properties like reusability, maintainability and re-engineering. So to identify the structural clones a number of approaches have been developed but the efficiency of those algorithms are less.