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

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

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