Parallel Lines end in a Double Pass Thru.
Zing [C1] : From an applicable 2 x 2. Leaders, as one movement, 1/4 Out and Run as Trailers Box Circulate and 1/4 In. A non-T-Bone 2 x 2 ends in Facing Couples.
Nice & Easy [C4]: From applicable formations. Outsides Zing as Centers Trade & Roll.
From a 2 x 2.
Box Circulate & 1/4 In.
This is the center's part of Ease Off.