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

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

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