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

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

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