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

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

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