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

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

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