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

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

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