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

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

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