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

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

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