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

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

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