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

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

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