From Parallel Waves, applicable Parallel Lines, Eight Chain Thru, applicable 2 x 4 T-Bones, or other applicable formations.

1. Circulate;
2. 1/2 Circulate;
3. Centers Recycle as Outsides Any-Shoulder Pass In.

Usually ends in a Double Pass Thru formation.

Cover Up 之前   Circulate 1 & 1/2 之后   Centers Recycle 同时 Outsides Pass In 之后 (完成)

anything(ers) Cover Up [C4]: Do the anything call; 1/2 Circulate; Centers Recycle as Outsides Any-Shoulder Pass In. The anything call replaces the first Circulate.

Cover Up But anything [C4]: Circulate; 1/2 Circulate; Outsides Any-Shoulder Pass In as Centers do the anything call. This is the same as Cover Up except the resulting Centers Replace the Recycle with the anything call.

In Roll Cover Up But Ah So 之前       In Roll Circulate 之后   1/2 Circulate 之后   Centers Ah So 同时 Outsides Pass In 之后 (完成)