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

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

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