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

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

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