*SUPPORT*
IN: fep kiki wif OUT: GREEN RED RED
IN: dax kiki fep OUT: RED BLUE BLUE
IN: dax gazzer OUT: BLUE BLUE BLUE BLUE
IN: zup zup OUT: PINK PINK
IN: wif OUT: GREEN
IN: dax OUT: BLUE
IN: wif wif lug OUT: GREEN GREEN GREEN
IN: wif gazzer OUT: GREEN GREEN GREEN GREEN
IN: zup gazzer OUT: PINK PINK PINK PINK
IN: fep wif OUT: RED GREEN
IN: dax kiki zup OUT: PINK BLUE BLUE
IN: dax fep kiki wif OUT: BLUE GREEN RED RED
IN: zup kiki wif OUT: GREEN PINK PINK
IN: dax kiki dax OUT: BLUE BLUE BLUE

*QUERY*
IN: zup fep lug OUT: PINK RED RED
IN: dax zup kiki zup OUT: BLUE PINK PINK PINK
IN: dax lug OUT: BLUE BLUE
IN: fep gazzer OUT: RED RED RED RED
IN: zup lug OUT: PINK PINK
IN: zup OUT: PINK
IN: zup wif gazzer OUT: PINK GREEN GREEN GREEN GREEN
IN: wif lug OUT: GREEN GREEN
IN: dax wif lug OUT: BLUE GREEN GREEN
IN: fep zup zup kiki wif OUT: RED PINK GREEN PINK PINK

*GRAMMAR*
zup -> PINK 
 fep -> RED 
 dax -> BLUE 
 wif -> GREEN 
 u1 gazzer -> [u1] [u1] [u1] [u1] 
 u1 kiki u2 -> [u2] [u1] [u1] 
 u1 lug -> [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 