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

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

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