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

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

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