a Level 3 b Level 2 c Level 2 d Level 3 e Level 4 f Level 4 g Level 5 h Level 4 j Level 3 k Level 1 l Level 1 m Level 2 n Level 4 o Level 4 p Level 7 r Level 4 s Level 5 t Level 7 v Level 2 w Level 1 x Level 3 y Level 3 z Level 2 th Level 4 ee Level 2 ng Level 3