If (Level 3's AS, or Level 3s AS+1(AS) and no more AS's) 
		Weight 300  
	Else if  (0 is in the first bit of the IP addresses)
		Weight 250
	Else
		Weigh 200 (lower priority than 250)

Rules to install routes from TWTC:
If (TWTC's AS, or TWTCs AS+1(AS) ' no more AS's) 
		Weight 300  
	Else if  (0 is in the first bit of the IP addresses)
		Weight 200
	Else
		Weigh 100 (lower priority than 250)