back_pack 0
bike 1
bike_helmet 2
bookcase 3
bottle 4
calculator 5
desktop_computer 6
desk_chair 7
desk_lamp 8
file_cabinet 9
headphones 10
keyboard 11
laptop_computer 12
letter_tray 13
mobile_phone 14
monitor 15
mouse 16
mug 17
paper_notebook 18
pen 19
phone 20
printer 21
projector 22
punchers 23
ring_binder 24
ruler 25
scissors 26
speaker 27
stapler 28
tape_dispenser 29
trash_can 30
