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

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

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