*SUPPORT*
IN: dax OUT: RED
IN: dax gazzer lug OUT: RED YELLOW
IN: zup OUT: PINK
IN: fep tufa dax dax kiki dax OUT: RED RED GREEN RED RED RED GREEN
IN: fep gazzer lug OUT: GREEN YELLOW
IN: fep fep gazzer lug OUT: GREEN GREEN YELLOW
IN: dax tufa dax kiki fep OUT: RED RED GREEN RED RED
IN: dax gazzer fep kiki fep OUT: RED GREEN GREEN RED GREEN
IN: zup gazzer fep OUT: PINK GREEN
IN: fep gazzer dax OUT: GREEN RED
IN: fep OUT: GREEN
IN: dax gazzer dax OUT: RED RED
IN: zup gazzer dax OUT: PINK RED
IN: lug fep kiki lug OUT: YELLOW GREEN YELLOW YELLOW GREEN

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

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