*SUPPORT*
IN: wif wif OUT: GREEN GREEN
IN: wif tufa kiki wif OUT: GREEN GREEN GREEN GREEN RED
IN: wif gazzer dax wif OUT: GREEN GREEN GREEN GREEN GREEN
IN: fep gazzer OUT: PURPLE PURPLE PURPLE PURPLE
IN: blicket tufa kiki fep OUT: BLUE PURPLE PURPLE PURPLE RED
IN: wif gazzer OUT: GREEN GREEN GREEN GREEN
IN: blicket gazzer OUT: BLUE BLUE BLUE BLUE
IN: blicket kiki fep OUT: PURPLE PURPLE PURPLE BLUE
IN: blicket wif kiki tufa OUT: BLUE RED RED RED GREEN
IN: tufa gazzer dax wif OUT: GREEN RED RED RED RED
IN: blicket blicket OUT: BLUE BLUE
IN: fep wif gazzer dax wif OUT: GREEN PURPLE GREEN GREEN GREEN GREEN
IN: tufa tufa gazzer OUT: RED RED RED RED RED
IN: blicket gazzer dax wif OUT: GREEN BLUE BLUE BLUE BLUE

*QUERY*
IN: tufa dax tufa dax fep dax wif OUT: GREEN PURPLE RED RED
IN: tufa gazzer OUT: RED RED RED RED
IN: blicket blicket dax tufa OUT: RED BLUE BLUE
IN: fep OUT: PURPLE
IN: tufa kiki fep OUT: PURPLE PURPLE PURPLE RED
IN: tufa blicket gazzer OUT: RED BLUE BLUE BLUE BLUE
IN: wif wif gazzer OUT: GREEN GREEN GREEN GREEN GREEN
IN: fep kiki wif OUT: GREEN GREEN GREEN PURPLE
IN: wif kiki tufa OUT: RED RED RED GREEN
IN: tufa OUT: RED

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