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

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

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