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

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

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