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

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

*GRAMMAR*
tufa -> PINK 
 kiki -> RED 
 dax -> GREEN 
 fep -> BLUE 
 x1 gazzer x2 -> [x1] [x2] 
 x1 wif -> [x1] [x1] [x1] 
 x1 lug -> [x1] [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 