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

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

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