c
tgree
2_c
tTHENc
t_e
b0ENDIFWHENst3lgt1_red1lgt1_yellow0lgt1_gree
0lgt2_red0lgt2_yellow1lgt2_gree
0c
t_e
b1IFc
tyellow2_c
tTHENc
t_e
b0ENDIFENDCASEENDPROCESSENDrtl
16
fr