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

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

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