*SUPPORT*
IN: tufa OUT: GREEN
IN: wif OUT: RED
IN: dax wif tufa fep dax lug OUT: PINK RED PINK GREEN PINK RED PINK GREEN
IN: wif gazzer OUT: RED RED
IN: kiki fep kiki OUT: BLUE BLUE
IN: tufa dax gazzer OUT: GREEN PINK PINK
IN: wif tufa OUT: RED GREEN
IN: dax OUT: PINK
IN: kiki fep dax OUT: PINK BLUE
IN: dax tufa kiki lug OUT: PINK GREEN BLUE PINK GREEN BLUE
IN: dax fep tufa OUT: GREEN PINK
IN: tufa fep kiki OUT: BLUE GREEN
IN: kiki dax OUT: BLUE PINK
IN: dax tufa OUT: PINK GREEN

*QUERY*
IN: dax tufa gazzer OUT: PINK GREEN GREEN
IN: dax gazzer OUT: PINK PINK
IN: dax lug OUT: PINK PINK
IN: kiki dax gazzer OUT: BLUE PINK PINK
IN: wif tufa wif fep kiki OUT: RED GREEN BLUE RED
IN: tufa gazzer OUT: GREEN GREEN
IN: dax fep dax OUT: PINK PINK
IN: tufa wif OUT: GREEN RED
IN: kiki lug OUT: BLUE BLUE
IN: dax kiki fep wif lug OUT: PINK RED BLUE PINK RED BLUE

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