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

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

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