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

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

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