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

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

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