*SUPPORT*
IN: wif wif OUT: PINK PINK
IN: wif OUT: PINK
IN: zup kiki wif OUT: BLUE PINK
IN: tufa kiki tufa OUT: GREEN GREEN
IN: tufa kiki zup OUT: GREEN BLUE
IN: dax zup kiki zup lug dax kiki dax OUT: RED RED RED BLUE BLUE
IN: tufa tufa tufa kiki tufa fep OUT: GREEN GREEN GREEN GREEN GREEN GREEN GREEN GREEN
IN: wif fep OUT: PINK PINK
IN: tufa wif OUT: GREEN PINK
IN: tufa fep OUT: GREEN GREEN
IN: zup OUT: BLUE
IN: wif kiki dax OUT: PINK RED
IN: wif kiki wif OUT: PINK PINK
IN: tufa kiki wif OUT: GREEN PINK

*QUERY*
IN: zup kiki zup OUT: BLUE BLUE
IN: zup kiki dax OUT: BLUE RED
IN: dax tufa kiki zup lug wif fep fep OUT: PINK PINK PINK PINK RED GREEN BLUE
IN: zup zup wif fep OUT: BLUE BLUE PINK BLUE BLUE PINK
IN: tufa OUT: GREEN
IN: tufa kiki dax OUT: GREEN RED
IN: dax kiki wif OUT: RED PINK
IN: zup kiki wif fep OUT: BLUE PINK BLUE PINK
IN: tufa dax lug tufa dax kiki dax OUT: GREEN RED RED GREEN RED
IN: dax lug zup fep fep OUT: BLUE BLUE BLUE BLUE RED

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