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

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

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