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

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

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