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

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

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