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

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

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