| Step 1 |
 |
| Opening N1 |
| Step 2 |
 |
| Distally, insert 1 into 2 loops and pick up double 2f. |
| ... |
 |
| Pass 3 distal to 2n. Proximally, insert 3 into proximal 1 loops, pick up 1f and return. |
| ... |
 |
| Pass 4 distal to 3f, pick up 2n and return. |
| Step 3 |
|
| 1 and 2 grasp 3f (between 4n and 4f) |
| ... |
 |
| Rotate energetically both hands, horizontally, clokwise then anticlocwise. |
| Final figure of 7. Piel de vibora |
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