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

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

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