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

*QUERY*
IN: dax wif zup OUT: YELLOW YELLOW PURPLE
IN: zup wif tufa OUT: PURPLE PURPLE GREEN
IN: tufa wif zup OUT: GREEN GREEN PURPLE
IN: dax tufa zup kiki OUT: YELLOW GREEN PURPLE PURPLE PURPLE PURPLE
IN: dax OUT: YELLOW
IN: zup wif dax OUT: PURPLE PURPLE YELLOW
IN: zup OUT: PURPLE
IN: dax kiki OUT: YELLOW YELLOW YELLOW YELLOW
IN: dax fep dax wif dax OUT: YELLOW YELLOW YELLOW YELLOW
IN: dax wif tufa fep dax kiki OUT: YELLOW YELLOW GREEN YELLOW YELLOW YELLOW YELLOW

*GRAMMAR*
tufa -> GREEN 
 lug -> RED 
 dax -> YELLOW 
 zup -> PURPLE 
 x1 fep x2 -> [x1] [x2] 
 u1 kiki -> [u1] [u1] [u1] [u1] 
 u1 wif u2 -> [u1] [u1] [u2] 
 u1 x1 -> [u1] [x1] 
 