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

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

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