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

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

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