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

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

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