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

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

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