*SUPPORT*
IN: dax dax lug wif OUT: PURPLE PURPLE BLUE BLUE
IN: dax lug dax OUT: PURPLE PURPLE PURPLE
IN: wif OUT: BLUE
IN: wif lug fep OUT: BLUE GREEN GREEN
IN: fep lug fep OUT: GREEN GREEN GREEN
IN: fep lug wif OUT: GREEN BLUE BLUE
IN: dax wif tufa lug fep OUT: PURPLE BLUE PINK GREEN GREEN
IN: wif wif OUT: BLUE BLUE
IN: fep wif OUT: GREEN BLUE
IN: dax lug tufa OUT: PURPLE PINK PINK
IN: tufa blicket OUT: PINK PINK PINK PINK
IN: fep dax OUT: GREEN PURPLE
IN: fep OUT: GREEN
IN: fep blicket OUT: GREEN GREEN GREEN GREEN

*QUERY*
IN: dax lug wif gazzer wif OUT: BLUE PURPLE BLUE BLUE PURPLE BLUE BLUE
IN: fep dax dax OUT: GREEN PURPLE PURPLE
IN: dax lug wif OUT: PURPLE BLUE BLUE
IN: dax OUT: PURPLE
IN: fep wif blicket OUT: GREEN BLUE GREEN BLUE GREEN BLUE GREEN BLUE
IN: wif gazzer fep lug tufa OUT: GREEN PINK PINK BLUE BLUE
IN: wif lug wif OUT: BLUE BLUE BLUE
IN: tufa fep OUT: PINK GREEN
IN: tufa OUT: PINK
IN: tufa lug tufa OUT: PINK PINK PINK

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