*SUPPORT*
IN: dax fep dax OUT: RED RED
IN: zup kiki OUT: PINK PINK PINK
IN: zup fep zup OUT: PINK PINK
IN: tufa tufa OUT: GREEN GREEN
IN: tufa fep dax OUT: GREEN RED
IN: tufa tufa wif OUT: GREEN GREEN GREEN GREEN
IN: gazzer kiki OUT: PURPLE PURPLE PURPLE
IN: gazzer dax kiki OUT: PURPLE RED RED RED
IN: tufa kiki OUT: GREEN GREEN GREEN
IN: tufa zup dax fep gazzer OUT: GREEN PINK RED PURPLE
IN: zup fep dax OUT: PINK RED
IN: gazzer gazzer zup kiki OUT: PURPLE PURPLE PINK PINK PINK
IN: tufa wif OUT: GREEN GREEN GREEN
IN: dax OUT: RED

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

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