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

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

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