Ends Mirror Turn To A Line ('Turn & Deal' toward Promenade direction) as Centers do a Leads U-Turn Back (by turning toward the Left), Veer Right, and As Couples Extend.

Ends in Parallel Lines.

before Polly Wally   after

Alternative definition (this is the original definition!):

Ends

1/4 To Promenade, Step Ahead, Turn another 1/4 toward their initial turning direction, and adjust to end in Parallel Lines.

Centers

1/4 To Promenade, Step Ahead, 1/4 To Promenade, and Step Ahead (to become Leaders in Parallel Lines).

Single Polly Wally [C3A]: From a 1 x 4 Column. Outsides Mirror Single Turn To A Line as Centers Left Roll To A Wave and Extend. Ends in a 2 x 2.

before Single Polly Wally   after