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

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

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