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

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

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