PRT1
4
4
4 0 2 (480 0 480 ) (0 0 480 ) (0 0 32 ) (480 0 32 ) 
4 0 1 (0 0 32 ) (0 0 480 ) (0 480 480 ) (0 480 32 ) 
4 1 3 (0 0 32 ) (0 0 480 ) (-480 0 480 ) (-480 0 32 ) 
4 2 3 (0 0 480 ) (0 0 32 ) (0 -480 32 ) (0 -480 480 )