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

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

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