CREATE TABLE table_name_67 (rider VARCHAR(255), grid VARCHAR(255), bike VARCHAR(255), laps VARCHAR(255), time VARCHAR(255))
What is the driver with the laps under 16, grid of 10, a bike of Yamaha YZF-R6, and ended with an accident?
    
SQL: SELECT rider FROM table_name_67 WHERE laps < 16 AND time = "accident" AND bike = "yamaha yzf-r6" AND grid = 10