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

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

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