s b x1 b s s s x1 s b s x1 b t x1 t b x1 b s x1 t b s x1 u t b x1 b u x1 b s x1 t s x1 t t x1 t u x1 u t x1 s u x1 s s x1 s 1 b 1 t 1 u 1 FULL ./SRS/Zantema/z090.srs