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

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

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