octopus rail revolve

 From:  urban_h
4724.1 
Hi all gurus !

I try to create a octopus but i don't get it right... the sketch I made in Cinema4D (lower right picture) so you understand what's shape i'm trying to achieve. Please put me on right track.
I start with a shape in topview and a rail in front view and then I tried to Rail Revolve but i dont achieve the right shape. How should I do that ? Thanks in advance !

/ urban
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