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

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

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