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

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

*GRAMMAR*
tufa -> BLUE 
 gazzer -> GREEN 
 zup -> PURPLE 
 fep -> RED 
 x1 dax x2 -> [x1] [x2] 
 x1 kiki x2 -> [x1] [x1] [x2] [x2] [x2] 
 x1 wif u1 -> [u1] [x1] 
 u1 x1 -> [u1] [x1] 
 