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

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

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