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

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

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