From applicable Parallel Lines (usually Parallel Waves).
Centers Run as Ends do your part Interlocked Diamond Circulate.
|Switch To An Interlocked Diamond|
As one movement, Switch To A Diamond & Very Centers Slither.
Switch To A Diamond [A2] :
From a Wave (or any other Line of 4).
Centers Run as Ends do your part Diamond Circulate.
Ends in a Diamond.
Switch To An Hourglass [A2] :
From Parallel Waves (or applicable Parallel Lines).
Centers Run as Ends do your part Hourglass Circulate
(Lead Ends 1/2 Circulate as Trailing Ends Veer Inward to end
in a Mini-Wave with their opposite).
Ends in an Hourglass.
$BInterlocked Diamond FORMATION [C1].