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

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

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