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

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

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