ก่อนปี 1981 ทีม Suzuki มีคะแนนเท่าไหร่และชนะน้อยกว่า 0 ครั้ง?ไม่จำเป็นต้องใช้ตารางทั้งหมด
Before 1981, how many Points did Team Suzuki have with less than 0 Wins?It is not neccessary to use all the tables.
 table_5721:  "Year" [ real]  "Class" [ text]  "Team" [ text]  "Machine" [ text]  "Points" [ real]  "Wins" [ real] 
SELECT SUM("Points") FROM table_5721 WHERE "Team" = 'suzuki' AND "Year" < '1981' AND "Wins" < '0'