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

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

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