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

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

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