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

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

*GRAMMAR*
zup -> YELLOW 
 gazzer -> RED 
 fep -> GREEN 
 tufa -> BLUE 
 u1 dax u2 -> [u2] [u1] 
 x1 kiki x2 -> [x1] [x2] [x1] [x1] 
 x1 lug u1 -> [u1] [x1] 
 u1 x1 -> [u1] [x1] 
 