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

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

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