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

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

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