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

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

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