From Parallel Lines or other applicable formations.
as Centers (Concentric) Circulate and Face In.
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.