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

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

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