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

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

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