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

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

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