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

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

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