*SUPPORT*
IN: dax tufa zup OUT: PINK RED PINK
IN: zup blicket dax OUT: RED PINK PINK
IN: wif zup tufa dax blicket wif OUT: GREEN RED PINK RED GREEN GREEN
IN: wif zup fep dax OUT: GREEN RED PINK
IN: zup tufa dax OUT: RED PINK RED
IN: zup OUT: RED
IN: dax zup blicket dax OUT: PINK RED PINK PINK
IN: dax fep dax OUT: PINK PINK
IN: dax OUT: PINK
IN: dax fep lug OUT: PINK YELLOW
IN: lug fep zup OUT: YELLOW RED
IN: dax wif zup wif blicket zup OUT: PINK GREEN RED GREEN RED RED
IN: lug fep wif OUT: YELLOW GREEN
IN: dax tufa dax OUT: PINK PINK PINK

*QUERY*
IN: lug OUT: YELLOW
IN: zup tufa wif OUT: RED GREEN RED
IN: wif lug dax dax blicket wif OUT: GREEN YELLOW PINK PINK GREEN GREEN
IN: dax dax tufa lug OUT: PINK PINK YELLOW PINK
IN: zup fep zup OUT: RED RED
IN: lug blicket lug OUT: YELLOW YELLOW YELLOW
IN: zup fep wif OUT: RED GREEN
IN: wif fep wif OUT: GREEN GREEN
IN: dax dax dax tufa dax blicket wif OUT: PINK PINK PINK PINK PINK GREEN GREEN
IN: lug zup tufa dax OUT: YELLOW RED PINK RED

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