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

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

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