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

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

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