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

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

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