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

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

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