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

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

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