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

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

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