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

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

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