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

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

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