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

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

*GRAMMAR*
tufa -> BLUE 
 fep -> RED 
 lug -> GREEN 
 wif -> PURPLE 
 x1 dax x2 -> [x1] [x1] [x2] [x2] 
 u1 zup -> [u1] [u1] 
 x1 kiki x2 -> [x2] [x2] [x1] [x2] [x1] 
 u1 x1 -> [u1] [x1] 
 