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

*QUERY*
IN: tufa OUT: YELLOW
IN: wif wif OUT: RED RED
IN: wif gazzer tufa OUT: RED YELLOW RED YELLOW
IN: tufa blicket wif gazzer blicket OUT: YELLOW GREEN RED GREEN YELLOW GREEN RED GREEN
IN: tufa lug OUT: YELLOW YELLOW YELLOW YELLOW YELLOW YELLOW
IN: zup OUT: BLUE
IN: zup dax blicket gazzer tufa OUT: GREEN GREEN BLUE YELLOW GREEN GREEN BLUE YELLOW
IN: tufa zup zup dax tufa OUT: YELLOW BLUE YELLOW YELLOW BLUE
IN: wif dax tufa OUT: YELLOW YELLOW RED
IN: blicket OUT: GREEN

*GRAMMAR*
wif -> RED 
 zup -> BLUE 
 blicket -> GREEN 
 tufa -> YELLOW 
 x1 lug -> [x1] [x1] [x1] [x1] [x1] [x1] 
 u1 dax u2 -> [u2] [u2] [u1] 
 x1 gazzer x2 -> [x1] [x2] [x1] [x2] 
 u1 x1 -> [u1] [x1] 
 