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

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

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