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

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

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