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

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

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