*SUPPORT*
IN: gazzer fep OUT: YELLOW BLUE
IN: blicket OUT: RED
IN: blicket fep zup OUT: RED BLUE BLUE
IN: gazzer tufa blicket OUT: RED YELLOW
IN: wif tufa gazzer OUT: YELLOW PURPLE
IN: gazzer wif gazzer OUT: YELLOW PURPLE YELLOW
IN: gazzer lug OUT: YELLOW YELLOW
IN: gazzer OUT: YELLOW
IN: blicket zup OUT: RED RED
IN: fep zup OUT: BLUE BLUE
IN: gazzer tufa gazzer OUT: YELLOW YELLOW
IN: blicket tufa blicket OUT: RED RED
IN: blicket tufa gazzer OUT: YELLOW RED
IN: blicket blicket lug OUT: RED RED RED

*QUERY*
IN: wif OUT: PURPLE
IN: fep lug OUT: BLUE BLUE
IN: wif lug OUT: PURPLE PURPLE
IN: fep tufa blicket OUT: RED BLUE
IN: fep OUT: BLUE
IN: gazzer gazzer zup OUT: YELLOW YELLOW YELLOW
IN: gazzer blicket tufa wif OUT: YELLOW PURPLE RED
IN: blicket lug OUT: RED RED
IN: wif wif wif OUT: PURPLE PURPLE PURPLE
IN: wif zup OUT: PURPLE PURPLE

*GRAMMAR*
blicket -> RED 
 gazzer -> YELLOW 
 fep -> BLUE 
 wif -> PURPLE 
 u1 zup -> [u1] [u1] 
 u1 tufa u2 -> [u2] [u1] 
 u1 lug -> [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 