Table schema:
CREATE TABLE table_name_64 (rider VARCHAR, bike VARCHAR, time VARCHAR, laps VARCHAR, grid VARCHAR)

Question: Who was the rider riding the Kawasaki ZX-6r, that rode less than 22 laps, and the grid was greater than 19, and retirement was the time?
SQL: SELECT rider FROM table_name_64 WHERE laps < 22 AND grid > 19 AND time = "retirement" AND bike = "kawasaki zx-6r"