Ask for Help: parser.y return confilict when add new systax

Hi, everybody, I want to make “select * into outfile … from t …” works in tidb, now it only valid as “select * from t … inot outfile …”, but mySQLworks both way.
below is my change

but “gmake parser_yacc” meet conflict error, I tried many ways but can’t make it right, could please anybody can help here?

THKS