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

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

*GRAMMAR*
wif -> RED 
 dax -> GREEN 
 blicket -> PURPLE 
 fep -> YELLOW 
 u1 zup x1 -> [u1] [x1] 
 x1 tufa x2 -> [x2] [x1] 
 x1 gazzer x2 -> [x2] [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 