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

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

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