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

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

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