SELECT back FROM table_name_88 WHERE supplier = "kooga" AND year = "2006-2008"
CREATE TABLE table_name_88 (back VARCHAR, supplier VARCHAR, year VARCHAR)
Back ใดมีซัพพลายเออร์ของ Kooga และปี 2549-2551
Which Back has a Supplier of Kooga and a Year of 2006-2008?