ARMHOLE SHAPING

Cast off 3 sts at beg of next 2 rows. [49 ( 53: 57) sts] Cast off 2 sts at beg of next 2 rows. [45 ( 49: 53) sts] Dec 1 st at each end of next and foll 2 alt rows. [39 ( 43: 47) sts] Work 3 rows. Dec 1 st at each of the next row. [37 ( 41: 45) sts] Continue in colourwork patt until work measures 29 ( 32: 35) cm.