*SUPPORT*
IN: wif lug OUT: YELLOW GREEN
IN: lug gazzer wif OUT: YELLOW YELLOW GREEN
IN: tufa tufa gazzer kiki gazzer kiki gazzer kiki OUT: RED RED RED RED RED RED BLUE BLUE
IN: lug OUT: GREEN
IN: wif fep wif OUT: YELLOW YELLOW
IN: kiki gazzer tufa OUT: BLUE BLUE RED
IN: tufa OUT: BLUE
IN: wif gazzer kiki OUT: RED RED YELLOW
IN: kiki gazzer lug OUT: GREEN GREEN RED
IN: wif OUT: YELLOW
IN: lug gazzer lug fep wif OUT: GREEN GREEN GREEN YELLOW
IN: lug fep tufa OUT: GREEN BLUE
IN: kiki tufa OUT: RED BLUE
IN: tufa lug lug fep lug gazzer tufa OUT: BLUE GREEN GREEN BLUE BLUE GREEN

*QUERY*
IN: kiki wif OUT: RED YELLOW
IN: tufa wif gazzer wif OUT: YELLOW YELLOW BLUE YELLOW
IN: wif gazzer tufa zup kiki OUT: RED RED BLUE BLUE YELLOW BLUE BLUE YELLOW
IN: kiki zup lug OUT: GREEN GREEN RED RED
IN: kiki zup wif tufa OUT: YELLOW BLUE YELLOW BLUE RED RED
IN: wif zup wif lug OUT: YELLOW GREEN YELLOW GREEN YELLOW YELLOW
IN: kiki OUT: RED
IN: wif gazzer wif gazzer wif OUT: YELLOW YELLOW YELLOW YELLOW YELLOW
IN: lug kiki OUT: GREEN RED
IN: kiki gazzer wif OUT: YELLOW YELLOW RED

*GRAMMAR*
wif -> YELLOW 
 lug -> GREEN 
 tufa -> BLUE 
 kiki -> RED 
 x1 fep x2 -> [x1] [x2] 
 x1 gazzer u1 -> [u1] [u1] [x1] 
 x1 zup x2 -> [x2] [x2] [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 