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

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

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