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

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

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