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

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

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