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

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

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