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

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

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