yes, just double it retracing with the working ends.
I talked about the constrictor structure, because to remember the structure of the Tweedledee bend I tie a Constrictor in the bight (ABoK #1251) and then open it…
[edit]
please read this (Ruby you know 
)
http://igkt.net/sm/index.php?topic=3989.msg28113#msg28113
and following reply by X1…
Ciao,
s.