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

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

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