(ERROR (program (call_expression (math_expression left: (math_expression left: (math_expression left: (math_expression left: (math_expression left: (identifier) (ERROR) operator: (user_defined_operator (comment) (comment) (comment) (comment) (comment) (ERROR)) (ERROR) right: (call_expression (unary_expression operator: (user_defined_operator) argument: (unary_expression operator: (user_defined_operator) argument: (identifier))) (argument_list (identifier)))) (ERROR) operator: (user_defined_operator) right: (unary_expression operator: (user_defined_operator) argument: (identifier))) (ERROR) operator: (user_defined_operator) right: (unary_expression operator: (user_defined_operator) argument: (identifier))) (ERROR) operator: (user_defined_operator) right: (unary_expression operator: (user_defined_operator) argument: (unary_expression operator: (user_defined_operator) argument: (identifier)))) (ERROR) operator: (user_defined_operator) right: (unary_expression operator: 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(assignment_statement left: (call_expression (identifier) (argument_list (identifier) (math_expression left: (identifier) right: (number_literal)))) right: (number_literal)) (end_do_loop_statement)) (keyword_statement) (end_program_statement)) (subroutine (subroutine_statement name: (name) parameters: (parameters (identifier) (identifier) (identifier) (identifier) (identifier) (identifier) (identifier) (identifier))) (ERROR) (implicit_statement (none)) (variable_declaration (intrinsic_type) (identifier) (identifier) (identifier) (identifier) (identifier) (identifier) (identifier) (identifier)) (variable_declaration (intrinsic_type) (call_expression (identifier) (argument_list (extent_specifier (number_literal) (math_expression left: (identifier) right: (number_literal))) (extent_specifier (number_literal) (math_expression left: (identifier) right: (number_literal))))) (call_expression (identifier) (argument_list (identifier) (identifier)))) (variable_declaration (intrinsic_type) 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(math_expression left: (number_literal) right: (call_expression (identifier) (argument_list (identifier) (identifier)))))) right: (number_literal))) (end_do_loop_statement)) (end_do_loop_statement)) (elseif_clause (parenthesized_expression (relational_expression left: (identifier) right: (identifier))) (ERROR) (do_loop_statement (loop_control_expression (identifier) (number_literal) (math_expression left: (identifier) right: (number_literal))) (assignment_statement left: (identifier) right: (identifier)) (do_loop_statement (loop_control_expression (identifier) (number_literal) (math_expression left: (identifier) right: (number_literal))) (assignment_statement left: (identifier) right: (math_expression left: (math_expression left: (identifier) right: (identifier)) right: (number_literal))) (assignment_statement left: (call_expression (identifier) (argument_list (identifier) (identifier))) right: (math_expression left: (parenthesized_expression (math_expression left: (math_expression 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