*SUPPORT*
IN: tufa dax lug OUT: RED YELLOW YELLOW
IN: dax gazzer kiki OUT: PINK YELLOW
IN: tufa lug OUT: RED RED
IN: wif tufa lug OUT: GREEN RED RED
IN: wif kiki zup tufa gazzer dax OUT: GREEN YELLOW RED PINK
IN: kiki lug OUT: PINK PINK
IN: tufa kiki lug OUT: RED PINK PINK
IN: wif wif tufa OUT: GREEN GREEN RED
IN: kiki kiki lug OUT: PINK PINK PINK
IN: kiki gazzer dax OUT: YELLOW PINK
IN: dax gazzer tufa OUT: RED YELLOW
IN: tufa tufa lug OUT: RED RED RED
IN: tufa zup dax zup wif OUT: GREEN YELLOW RED
IN: wif OUT: GREEN

*QUERY*
IN: tufa zup dax dax tufa tufa OUT: YELLOW YELLOW RED RED RED
IN: wif lug OUT: GREEN GREEN
IN: wif gazzer wif OUT: GREEN GREEN
IN: tufa tufa tufa OUT: RED RED RED
IN: wif gazzer dax OUT: YELLOW GREEN
IN: dax OUT: YELLOW
IN: dax zup kiki OUT: PINK YELLOW
IN: kiki gazzer kiki OUT: PINK PINK
IN: tufa wif lug OUT: RED GREEN GREEN
IN: kiki OUT: PINK

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