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

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

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