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

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

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