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

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

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