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

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

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