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

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

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