1 is Head
2 is Neck
3 is Shoulder
4 is Shirt
5 is Chest
6 is Waist
7 is Legs
8 is Feet
9 is Wrist
10 is Hands
11 is Top Finger
12 is Bottom Finger
13 is Top Trinket
14 is Bottom Trinket
15 is Back
16 is Main Hand
17 is Off-Hand
18 is Ranged
19 is Tabard
20 is Ammo