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

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

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