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

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

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