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

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

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