From normal Facing Couples, or a Single Starting Double Pass Thru with the Ladies in front.
Similar to Four Ladies Chain, except that it is done
by two couples only.
Two ladies star 1/2 way across to the other Boy, giving that Boy
their left-hand. Boy places his left-hand in her left hand, then
puts his right-hand on her back to turn her (about 3/4) to end in
Ends in facing couples, with the Girls having swapped positions.
See also Four Ladies Chain [Basic]