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

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

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