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

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

*GRAMMAR*
gazzer -> GREEN 
 fep -> RED 
 zup -> BLUE 
 kiki -> PINK 
 x1 tufa -> [x1] [x1] [x1] 
 u1 dax u2 -> [u2] [u1] 
 x1 wif x2 -> [x1] [x2] 
 u1 x1 -> [u1] [x1] 
 