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

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

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