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

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

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