*SUPPORT*
IN: lug tufa fep OUT: BLUE PURPLE
IN: fep tufa fep OUT: BLUE BLUE
IN: dax blicket wif OUT: GREEN PINK PINK PINK
IN: fep blicket lug OUT: BLUE PURPLE PURPLE PURPLE
IN: dax fep blicket fep OUT: GREEN BLUE BLUE BLUE BLUE
IN: lug kiki OUT: PURPLE PURPLE
IN: dax lug kiki OUT: GREEN PURPLE PURPLE
IN: dax OUT: GREEN
IN: lug blicket fep OUT: PURPLE BLUE BLUE BLUE
IN: wif dax kiki OUT: PINK GREEN GREEN
IN: wif lug kiki OUT: PINK PURPLE PURPLE
IN: dax blicket lug OUT: GREEN PURPLE PURPLE PURPLE
IN: dax kiki OUT: GREEN GREEN
IN: lug dax blicket wif OUT: PURPLE GREEN PINK PINK PINK

*QUERY*
IN: lug dax blicket dax OUT: PURPLE GREEN GREEN GREEN GREEN
IN: wif blicket dax OUT: PINK GREEN GREEN GREEN
IN: lug OUT: PURPLE
IN: lug blicket lug OUT: PURPLE PURPLE PURPLE PURPLE
IN: wif OUT: PINK
IN: wif kiki OUT: PINK PINK
IN: dax tufa fep OUT: BLUE GREEN
IN: dax tufa lug OUT: PURPLE GREEN
IN: wif tufa fep OUT: BLUE PINK
IN: fep OUT: BLUE

*GRAMMAR*
lug -> PURPLE 
 wif -> PINK 
 dax -> GREEN 
 fep -> BLUE 
 u1 blicket u2 -> [u1] [u2] [u2] [u2] 
 u1 kiki -> [u1] [u1] 
 u1 tufa u2 -> [u2] [u1] 
 u1 x1 -> [u1] [x1] 
 