*SUPPORT*
IN: lug fep wif OUT: GREEN RED
IN: gazzer lug fep lug OUT: YELLOW RED RED
IN: gazzer gazzer tufa OUT: YELLOW YELLOW YELLOW YELLOW
IN: wif tufa OUT: GREEN GREEN
IN: lug fep dax OUT: PURPLE RED
IN: wif OUT: GREEN
IN: wif lug tufa OUT: GREEN RED GREEN RED
IN: dax wif OUT: PURPLE GREEN
IN: wif fep dax blicket wif tufa OUT: GREEN PURPLE GREEN GREEN PURPLE GREEN
IN: lug fep lug tufa OUT: RED RED RED RED
IN: wif fep gazzer blicket gazzer OUT: YELLOW YELLOW GREEN
IN: gazzer blicket dax fep dax OUT: PURPLE PURPLE YELLOW
IN: lug lug fep lug tufa OUT: RED RED RED RED RED RED
IN: lug tufa OUT: RED RED

*QUERY*
IN: dax blicket dax OUT: PURPLE PURPLE
IN: wif fep gazzer OUT: YELLOW GREEN
IN: gazzer fep dax tufa OUT: PURPLE YELLOW PURPLE YELLOW
IN: lug gazzer fep gazzer tufa OUT: RED YELLOW YELLOW RED YELLOW YELLOW
IN: lug fep gazzer OUT: YELLOW RED
IN: gazzer OUT: YELLOW
IN: wif fep lug OUT: RED GREEN
IN: lug OUT: RED
IN: gazzer fep dax OUT: PURPLE YELLOW
IN: dax OUT: PURPLE

*GRAMMAR*
wif -> GREEN 
 gazzer -> YELLOW 
 lug -> RED 
 dax -> PURPLE 
 x1 tufa -> [x1] [x1] 
 x1 blicket x2 -> [x2] [x1] 
 u1 fep u2 -> [u2] [u1] 
 u1 x1 -> [u1] [x1] 
 