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

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

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