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

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

*GRAMMAR*
wif -> YELLOW 
 dax -> RED 
 lug -> GREEN 
 fep -> PINK 
 x1 kiki u1 -> [u1] [x1] 
 u1 blicket u2 -> [u2] [u2] [u1] 
 x1 tufa x2 -> [x2] [x1] 
 u1 x1 -> [u1] [x1] 
 