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

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

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