*SUPPORT*
IN: zup kiki lug OUT: RED BLUE
IN: gazzer kiki lug OUT: RED PURPLE
IN: zup dax OUT: BLUE BLUE
IN: zup OUT: BLUE
IN: wif dax OUT: YELLOW YELLOW
IN: wif tufa OUT: YELLOW YELLOW
IN: wif kiki gazzer OUT: PURPLE YELLOW
IN: zup zup zup tufa OUT: BLUE BLUE BLUE BLUE
IN: lug kiki lug OUT: RED RED
IN: lug dax OUT: RED RED
IN: wif wif zup kiki zup OUT: YELLOW YELLOW BLUE BLUE
IN: gazzer tufa OUT: PURPLE PURPLE
IN: lug zup OUT: RED BLUE
IN: lug kiki wif OUT: YELLOW RED

*QUERY*
IN: zup tufa OUT: BLUE BLUE
IN: lug gazzer OUT: RED PURPLE
IN: lug tufa OUT: RED RED
IN: lug wif tufa OUT: RED YELLOW YELLOW
IN: lug OUT: RED
IN: gazzer OUT: PURPLE
IN: lug kiki gazzer OUT: PURPLE RED
IN: wif wif kiki zup OUT: YELLOW BLUE YELLOW
IN: zup zup tufa OUT: BLUE BLUE BLUE
IN: gazzer dax OUT: PURPLE PURPLE

*GRAMMAR*
gazzer -> PURPLE 
 lug -> RED 
 wif -> YELLOW 
 zup -> BLUE 
 u1 tufa -> [u1] [u1] 
 u1 dax -> [u1] [u1] 
 u1 kiki u2 -> [u2] [u1] 
 u1 x1 -> [u1] [x1] 
 