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

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

*GRAMMAR*
tufa -> RED 
 dax -> GREEN 
 zup -> YELLOW 
 wif -> PURPLE 
 x1 fep -> [x1] [x1] 
 u1 lug u2 -> [u2] [u1] [u1] 
 x1 gazzer x2 -> [x1] [x1] [x2] [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 