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

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

*GRAMMAR*
wif -> PURPLE 
 dax -> YELLOW 
 fep -> BLUE 
 tufa -> GREEN 
 x1 lug x2 -> [x1] [x2] 
 x1 blicket x2 -> [x2] [x2] [x1] 
 u1 kiki u2 -> [u1] [u2] 
 u1 x1 -> [u1] [x1] 
 