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

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

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