*SUPPORT*
IN: tufa lug zup OUT: GREEN YELLOW
IN: zup OUT: YELLOW
IN: gazzer lug kiki OUT: BLUE RED
IN: zup gazzer lug kiki OUT: YELLOW BLUE RED
IN: gazzer blicket tufa OUT: BLUE BLUE GREEN GREEN
IN: kiki OUT: RED
IN: gazzer lug zup OUT: BLUE YELLOW
IN: tufa blicket tufa OUT: GREEN GREEN GREEN GREEN
IN: zup lug kiki OUT: YELLOW RED
IN: gazzer tufa lug tufa OUT: BLUE GREEN GREEN
IN: gazzer wif zup lug kiki OUT: BLUE YELLOW RED BLUE BLUE YELLOW RED
IN: tufa lug kiki OUT: GREEN RED
IN: tufa gazzer blicket gazzer OUT: GREEN BLUE BLUE BLUE BLUE
IN: kiki blicket zup OUT: RED RED YELLOW YELLOW

*QUERY*
IN: tufa OUT: GREEN
IN: kiki blicket tufa OUT: RED RED GREEN GREEN
IN: kiki lug tufa OUT: RED GREEN
IN: zup wif tufa OUT: YELLOW GREEN YELLOW YELLOW GREEN
IN: gazzer OUT: BLUE
IN: tufa blicket kiki OUT: GREEN GREEN RED RED
IN: gazzer blicket zup OUT: BLUE BLUE YELLOW YELLOW
IN: zup wif gazzer OUT: YELLOW BLUE YELLOW YELLOW BLUE
IN: tufa wif tufa OUT: GREEN GREEN GREEN GREEN GREEN
IN: tufa wif zup OUT: GREEN YELLOW GREEN GREEN YELLOW

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