Step 18: Repeat steps 5 thru 9
6. Loop second rope around first rope & across the top of the third rope .
7. Loop third rope around second rope & across the top of the fourth rope .
8. Loop fourth rope around third rope & insert tail end of fourth rope into loop made with first rope .
9. Tigthen up all ropes until a tight four section knot appears
Repeat until only short lengths of each rope remain