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

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

*GRAMMAR*
wif -> BLUE 
 tufa -> YELLOW 
 fep -> GREEN 
 gazzer -> PURPLE 
 u1 lug u2 -> [u1] [u2] 
 x1 dax x2 -> [x2] [x1] 
 u1 kiki -> [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 