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

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

*GRAMMAR*
zup -> RED 
 wif -> GREEN 
 gazzer -> PURPLE 
 tufa -> BLUE 
 u1 fep x1 -> [u1] [x1] 
 x1 lug x2 -> [x2] [x1] 
 u1 dax -> [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 