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

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

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