*SUPPORT*
IN: lug fep OUT: GREEN GREEN
IN: tufa lug fep OUT: BLUE GREEN GREEN
IN: dax fep OUT: PINK PINK
IN: dax fep zup tufa tufa OUT: PINK PINK BLUE BLUE
IN: wif blicket tufa fep OUT: YELLOW BLUE BLUE
IN: tufa blicket dax tufa wif OUT: BLUE PINK BLUE YELLOW
IN: dax dax tufa fep OUT: PINK PINK BLUE BLUE
IN: dax zup lug fep OUT: PINK GREEN GREEN
IN: tufa blicket lug OUT: BLUE GREEN
IN: lug fep zup wif OUT: GREEN GREEN YELLOW
IN: lug fep zup tufa zup wif OUT: GREEN GREEN BLUE YELLOW
IN: wif lug blicket dax fep OUT: YELLOW GREEN PINK PINK
IN: tufa blicket tufa wif dax OUT: BLUE BLUE YELLOW PINK
IN: wif zup tufa fep OUT: YELLOW BLUE BLUE

*QUERY*
IN: tufa fep OUT: BLUE BLUE
IN: lug blicket dax fep OUT: GREEN PINK PINK
IN: dax lug OUT: PINK GREEN
IN: tufa lug blicket wif fep OUT: BLUE GREEN YELLOW YELLOW
IN: dax dax fep OUT: PINK PINK PINK
IN: wif tufa OUT: YELLOW BLUE
IN: tufa fep zup tufa fep OUT: BLUE BLUE BLUE BLUE
IN: dax OUT: PINK
IN: lug OUT: GREEN
IN: wif OUT: YELLOW

*GRAMMAR*
tufa -> BLUE 
 wif -> YELLOW 
 dax -> PINK 
 lug -> GREEN 
 u1 fep -> [u1] [u1] 
 x1 zup x2 -> [x1] [x2] 
 u1 blicket x1 -> [u1] [x1] 
 u1 x1 -> [u1] [x1] 
 