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

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

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