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

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

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