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

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

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