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

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

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