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

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

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