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

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

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