CREATE TABLE table_name_4 (years VARCHAR, jersey_number_s_ VARCHAR, position VARCHAR)

What years did the player with the jersey number 33 and played position pf play?
SELECT years FROM table_name_4 WHERE jersey_number_s_ = 33 AND position = "pf"
SELECT "years" FROM "table_name_4" WHERE "jersey_number_s_" = 33 AND "pf" = "position"