*SUPPORT*
IN: zup kiki zup OUT: RED RED RED RED
IN: gazzer gazzer blicket zup blicket gazzer OUT: BLUE RED BLUE BLUE RED BLUE
IN: gazzer wif OUT: BLUE BLUE
IN: gazzer kiki gazzer OUT: BLUE BLUE BLUE BLUE
IN: tufa tufa wif OUT: YELLOW YELLOW YELLOW
IN: gazzer gazzer wif OUT: BLUE BLUE BLUE
IN: zup gazzer kiki tufa blicket zup OUT: RED RED YELLOW YELLOW YELLOW BLUE RED
IN: tufa tufa OUT: YELLOW YELLOW
IN: tufa kiki gazzer OUT: BLUE BLUE BLUE YELLOW
IN: gazzer gazzer kiki tufa OUT: BLUE YELLOW YELLOW YELLOW BLUE
IN: fep wif blicket gazzer OUT: BLUE GREEN GREEN BLUE
IN: fep OUT: GREEN
IN: tufa kiki tufa blicket tufa blicket fep OUT: GREEN YELLOW YELLOW YELLOW YELLOW YELLOW YELLOW GREEN
IN: tufa wif OUT: YELLOW YELLOW

*QUERY*
IN: fep kiki zup OUT: RED RED RED GREEN
IN: zup gazzer blicket gazzer OUT: BLUE RED BLUE BLUE
IN: zup wif blicket fep OUT: GREEN RED RED GREEN
IN: tufa kiki gazzer blicket tufa OUT: YELLOW BLUE BLUE BLUE YELLOW YELLOW
IN: tufa OUT: YELLOW
IN: fep kiki fep OUT: GREEN GREEN GREEN GREEN
IN: fep wif OUT: GREEN GREEN
IN: fep kiki tufa blicket fep OUT: GREEN YELLOW YELLOW YELLOW GREEN GREEN
IN: gazzer kiki fep OUT: GREEN GREEN GREEN BLUE
IN: tufa kiki tufa OUT: YELLOW YELLOW YELLOW YELLOW

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