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

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

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