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

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

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