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

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

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