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

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

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