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

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

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