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

*QUERY*
IN: blicket OUT: BLUE
IN: dax lug OUT: GREEN RED
IN: tufa dax gazzer tufa OUT: PURPLE GREEN PURPLE GREEN
IN: lug kiki OUT: RED RED RED RED
IN: lug gazzer blicket OUT: RED BLUE RED
IN: tufa tufa OUT: PURPLE PURPLE
IN: dax gazzer dax OUT: GREEN GREEN GREEN
IN: lug blicket OUT: RED BLUE
IN: blicket kiki OUT: BLUE BLUE BLUE BLUE
IN: lug lug OUT: RED RED

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