CREATE TABLE table_name_88 (back VARCHAR2, supplier VARCHAR2, year VARCHAR2)

Which Back has a Supplier of Kooga and a Year of 2006-2008?
SELECT back FROM table_name_88 WHERE supplier = "kooga" AND year = "2006-2008"
SELECT "back" FROM "table_name_88" WHERE "2006-2008" = "year" AND "kooga" = "supplier"