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

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

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