a c x1 c b c c a x1 b b b x1 c b x1 d d x1 d b d b d x1 a a x1 a d a x1 a b x1 c c a x1 c c x1 c b c b c x1 c c c x1 c b b x1 a 1 c 1 b 1 d 1 FULL ./SRS/secret06/torpa/secr9.srs