*SUPPORT*
IN: wif zup OUT: YELLOW GREEN
IN: wif dax lug OUT: YELLOW PURPLE
IN: zup zup kiki wif OUT: YELLOW GREEN GREEN
IN: wif zup dax zup OUT: YELLOW GREEN GREEN
IN: lug wif kiki zup OUT: GREEN PURPLE YELLOW
IN: lug tufa zup tufa zup OUT: GREEN GREEN PURPLE
IN: zup tufa fep kiki fep kiki lug OUT: PURPLE RED RED GREEN
IN: lug kiki lug OUT: PURPLE PURPLE
IN: lug dax lug OUT: PURPLE PURPLE
IN: lug dax wif OUT: PURPLE YELLOW
IN: zup wif dax fep OUT: GREEN YELLOW RED
IN: fep OUT: RED
IN: wif zup zup lug dax zup kiki zup OUT: GREEN YELLOW GREEN GREEN PURPLE GREEN
IN: fep tufa lug dax lug OUT: PURPLE PURPLE RED

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

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