DEF def IDENTIFIER fib LPAREN ( IDENTIFIER n RPAREN ) COLON : NEWLINE INDENT IDENTIFIER f0 ASSIGN = INTEGER 0 NEWLINE IDENTIFIER f1 ASSIGN = INTEGER 1 NEWLINE IDENTIFIER i ASSIGN = INTEGER 0 NEWLINE WHILE while IDENTIFIER i LT < IDENTIFIER n COLON : NEWLINE INDENT IDENTIFIER fi ASSIGN = IDENTIFIER f0 PLUS + IDENTIFIER f1 NEWLINE IDENTIFIER f0 ASSIGN = IDENTIFIER f1 NEWLINE IDENTIFIER f1 ASSIGN = IDENTIFIER fi NEWLINE IDENTIFIER i ASSIGN = IDENTIFIER i PLUS + INTEGER 1 NEWLINE DEDENT RETURN return IDENTIFIER f0 NEWLINE DEDENT IDENTIFIER fib LPAREN ( INTEGER 0 RPAREN ) NEWLINE IDENTIFIER fib LPAREN ( INTEGER 1 RPAREN ) NEWLINE IDENTIFIER fib LPAREN ( INTEGER 2 RPAREN ) NEWLINE IDENTIFIER fib LPAREN ( INTEGER 3 RPAREN ) NEWLINE IDENTIFIER fib LPAREN ( INTEGER 4 RPAREN ) NEWLINE IDENTIFIER fib LPAREN ( INTEGER 5 RPAREN ) NEWLINE