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

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

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