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

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

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