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

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

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