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

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

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