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

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

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