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

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

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