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

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

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