*SUPPORT*
IN: dax blicket gazzer kiki zup kiki zup OUT: RED PURPLE GREEN GREEN
IN: lug OUT: YELLOW
IN: lug zup dax kiki dax OUT: YELLOW GREEN RED RED
IN: dax gazzer blicket zup OUT: RED PURPLE GREEN
IN: lug blicket dax OUT: YELLOW RED
IN: dax tufa lug OUT: RED YELLOW RED
IN: zup blicket lug OUT: GREEN YELLOW
IN: lug blicket dax kiki gazzer OUT: YELLOW RED PURPLE
IN: lug zup zup zup kiki dax OUT: YELLOW GREEN GREEN GREEN RED
IN: lug blicket lug OUT: YELLOW YELLOW
IN: dax tufa gazzer dax blicket zup OUT: RED PURPLE RED GREEN RED
IN: dax OUT: RED
IN: dax zup OUT: RED GREEN
IN: zup lug OUT: GREEN YELLOW

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

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