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

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

*GRAMMAR*
dax -> RED 
 wif -> BLUE 
 lug -> PINK 
 fep -> GREEN 
 u1 kiki u2 -> [u1] [u2] 
 u1 tufa -> [u1] [u1] 
 x1 gazzer x2 -> [x1] [x2] [x1] 
 u1 x1 -> [u1] [x1] 
 