i need to eliminate the left recursion or apply left factoring for this statements, can someone please help me with it.

please include clear comments, thanks.

program -> function_list end_list

function -> def ID ( parameters ) : statements enddef | def ID ( ) : statements enddef

statement -> ID = exp | print ( exp ) | ID = input( ) | ID ( ) | ID ( exp_list ) | return exp

end -> ID ( ) | ID ( exp_list )| ID = input( ) | print ( exp )

factor -> ( exp ) |- factor | NUMBER | STRING | ID | ID ( ) | ID ( exp_list )