*SUPPORT*
IN: dax zup dax kiki OUT: YELLOW PINK YELLOW YELLOW
IN: zup wif fep OUT: PINK BLUE BLUE
IN: dax kiki OUT: YELLOW YELLOW
IN: dax zup OUT: YELLOW PINK
IN: zup tufa lug OUT: GREEN PINK PINK PINK
IN: zup kiki OUT: PINK PINK
IN: lug tufa dax OUT: YELLOW GREEN GREEN GREEN
IN: zup dax tufa lug OUT: PINK GREEN YELLOW YELLOW YELLOW
IN: dax OUT: YELLOW
IN: dax fep OUT: YELLOW YELLOW
IN: wif fep OUT: BLUE BLUE
IN: zup tufa zup OUT: PINK PINK PINK PINK
IN: wif tufa dax OUT: YELLOW BLUE BLUE BLUE
IN: lug fep OUT: GREEN GREEN

*QUERY*
IN: dax dax OUT: YELLOW YELLOW
IN: wif OUT: BLUE
IN: dax wif kiki OUT: YELLOW BLUE BLUE
IN: lug kiki OUT: GREEN GREEN
IN: zup lug lug fep OUT: PINK GREEN GREEN GREEN
IN: wif dax kiki OUT: BLUE YELLOW YELLOW
IN: dax dax fep OUT: YELLOW YELLOW YELLOW
IN: lug wif OUT: GREEN BLUE
IN: dax wif fep OUT: YELLOW BLUE BLUE
IN: zup lug fep OUT: PINK GREEN GREEN

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