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

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

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