*SUPPORT*
IN: tufa OUT: RED
IN: lug OUT: GREEN
IN: tufa wif kiki OUT: RED RED RED RED
IN: lug dax wif kiki OUT: GREEN BLUE BLUE GREEN BLUE BLUE
IN: dax blicket dax dax kiki OUT: BLUE BLUE BLUE BLUE BLUE BLUE
IN: dax OUT: BLUE
IN: zup wif OUT: PINK PINK
IN: dax wif blicket lug wif OUT: GREEN GREEN BLUE BLUE
IN: tufa wif OUT: RED RED
IN: tufa dax wif blicket zup wif OUT: PINK PINK RED BLUE BLUE
IN: dax tufa zup blicket dax wif OUT: BLUE BLUE BLUE RED PINK
IN: dax zup dax zup OUT: BLUE PINK BLUE PINK
IN: lug wif OUT: GREEN GREEN
IN: lug blicket tufa kiki OUT: RED GREEN RED GREEN

*QUERY*
IN: zup OUT: PINK
IN: lug lug zup wif kiki OUT: GREEN GREEN PINK PINK GREEN GREEN PINK PINK
IN: lug dax wif OUT: GREEN BLUE BLUE
IN: dax kiki OUT: BLUE BLUE
IN: dax wif kiki OUT: BLUE BLUE BLUE BLUE
IN: zup zup wif OUT: PINK PINK PINK
IN: tufa lug blicket tufa blicket zup OUT: PINK RED RED GREEN
IN: dax wif OUT: BLUE BLUE
IN: dax dax kiki kiki OUT: BLUE BLUE BLUE BLUE BLUE BLUE BLUE BLUE
IN: dax wif blicket dax wif kiki OUT: BLUE BLUE BLUE BLUE BLUE BLUE BLUE BLUE

*GRAMMAR*
tufa -> RED 
 lug -> GREEN 
 dax -> BLUE 
 zup -> PINK 
 u1 wif -> [u1] [u1] 
 x1 kiki -> [x1] [x1] 
 x1 blicket x2 -> [x2] [x1] 
 u1 x1 -> [u1] [x1] 
 