SHAPE ARMHOLES

Keeping patt correct, cast off 8) sts at beg of next 2 rows. [45 ( 49: 57: 61: 67) sts] Dec 1 st at each end of next 7 ( 7: 9: 7) rows, then on foll 1 ( 2: 2: 4: 4) alt rows, then on foll 4th row. [27 ( 29: 33: 37: 43) sts] 6( 7: 7: 8: 7: Work 9 ( 9: 11: 11: 13) rows, ending with RS facing for next row. Inc 1 st at each end of next and foll 4th row, then on foll 3 alt rows, taking inc sts into patt. [37 ( 39: 43: 47: 53) sts] Work 3 rows, ending with RS facing for next row.