*SUPPORT*
IN: gazzer gazzer dax wif OUT: YELLOW YELLOW YELLOW YELLOW GREEN
IN: fep tufa OUT: BLUE BLUE BLUE
IN: fep OUT: BLUE
IN: lug tufa OUT: RED RED RED
IN: gazzer dax gazzer OUT: YELLOW YELLOW YELLOW
IN: gazzer wif tufa OUT: YELLOW GREEN GREEN GREEN
IN: wif dax lug OUT: GREEN GREEN RED
IN: wif tufa OUT: GREEN GREEN GREEN
IN: wif tufa dax lug OUT: GREEN GREEN GREEN GREEN GREEN GREEN RED
IN: gazzer tufa OUT: YELLOW YELLOW YELLOW
IN: lug OUT: RED
IN: fep tufa dax fep OUT: BLUE BLUE BLUE BLUE BLUE BLUE BLUE
IN: wif dax gazzer OUT: GREEN GREEN YELLOW
IN: fep lug tufa OUT: BLUE RED RED RED

*QUERY*
IN: lug wif OUT: RED GREEN
IN: gazzer OUT: YELLOW
IN: fep dax fep OUT: BLUE BLUE BLUE
IN: fep fep OUT: BLUE BLUE
IN: wif OUT: GREEN
IN: gazzer wif OUT: YELLOW GREEN
IN: gazzer kiki lug tufa OUT: YELLOW RED RED RED RED RED RED
IN: fep gazzer dax wif OUT: BLUE YELLOW BLUE YELLOW GREEN
IN: lug fep OUT: RED BLUE
IN: wif tufa dax gazzer OUT: GREEN GREEN GREEN GREEN GREEN GREEN YELLOW

*GRAMMAR*
gazzer -> YELLOW 
 wif -> GREEN 
 lug -> RED 
 fep -> BLUE 
 x1 kiki x2 -> [x1] [x2] [x2] 
 x1 dax u1 -> [x1] [x1] [u1] 
 u1 tufa -> [u1] [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 