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

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

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