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

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

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