*SUPPORT*
IN: dax OUT: GREEN
IN: fep wif fep OUT: RED RED
IN: dax wif dax OUT: GREEN GREEN
IN: fep kiki tufa gazzer OUT: PURPLE RED PURPLE RED PURPLE RED PURPLE RED
IN: fep fep kiki zup OUT: RED YELLOW RED
IN: zup kiki tufa OUT: PURPLE YELLOW
IN: tufa fep OUT: PURPLE RED
IN: fep wif zup OUT: YELLOW RED
IN: zup wif zup OUT: YELLOW YELLOW
IN: dax kiki dax OUT: GREEN GREEN
IN: fep wif tufa OUT: PURPLE RED
IN: fep kiki dax OUT: GREEN RED
IN: zup OUT: YELLOW
IN: tufa wif dax OUT: GREEN PURPLE

*QUERY*
IN: fep wif dax gazzer OUT: GREEN RED GREEN RED GREEN RED GREEN RED
IN: zup wif fep OUT: RED YELLOW
IN: tufa kiki dax OUT: GREEN PURPLE
IN: tufa dax gazzer OUT: PURPLE GREEN PURPLE GREEN PURPLE GREEN PURPLE GREEN
IN: tufa kiki fep OUT: RED PURPLE
IN: fep gazzer OUT: RED RED RED RED
IN: dax wif fep OUT: RED GREEN
IN: dax zup dax OUT: GREEN YELLOW GREEN
IN: fep OUT: RED
IN: fep kiki tufa OUT: PURPLE RED

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