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

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

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