asphalt
$0
bark
$0
indoor
$0
brick
$0
indoor
$0
cobblestone
$0
cobblestone
$0
natural
$0
floor
$0
PBR
$0
brick
$0
$0
brick
$0
dirty
$0
natural
$0
floor
$0
floor
$0
PBR
$0
concrete
$0
dirty
$0
man made
$0
brick
$0
natural
$0
bark
$0
floor
$0