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

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

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