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

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

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