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

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

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