*SUPPORT*
IN: zup kiki tufa fep tufa OUT: PURPLE RED PURPLE
IN: dax kiki wif OUT: GREEN BLUE
IN: wif gazzer OUT: BLUE BLUE
IN: tufa fep zup wif fep wif zup gazzer OUT: BLUE RED RED RED BLUE PURPLE
IN: dax wif gazzer OUT: GREEN BLUE BLUE
IN: wif kiki tufa OUT: BLUE PURPLE
IN: tufa OUT: PURPLE
IN: tufa kiki dax OUT: PURPLE GREEN
IN: tufa wif kiki zup OUT: PURPLE BLUE RED
IN: tufa gazzer fep wif gazzer OUT: BLUE BLUE PURPLE PURPLE
IN: tufa zup gazzer fep wif OUT: BLUE PURPLE RED RED
IN: tufa kiki wif OUT: PURPLE BLUE
IN: dax OUT: GREEN
IN: zup OUT: RED

*QUERY*
IN: dax gazzer OUT: GREEN GREEN
IN: dax wif kiki wif OUT: GREEN BLUE BLUE
IN: wif kiki wif OUT: BLUE BLUE
IN: tufa gazzer OUT: PURPLE PURPLE
IN: zup gazzer fep wif wif gazzer fep tufa OUT: PURPLE BLUE BLUE BLUE RED RED
IN: wif kiki dax OUT: BLUE GREEN
IN: wif OUT: BLUE
IN: wif tufa gazzer OUT: BLUE PURPLE PURPLE
IN: tufa kiki tufa OUT: PURPLE PURPLE
IN: zup gazzer OUT: RED RED

*GRAMMAR*
zup -> RED 
 wif -> BLUE 
 dax -> GREEN 
 tufa -> PURPLE 
 u1 kiki u2 -> [u1] [u2] 
 x1 fep x2 -> [x2] [x1] 
 u1 gazzer -> [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 