what a mess
i`ve recently seen something similar on a tv channel
two `embracing` one another (it could have been copulation i do not know i did not understand the language and i have not really felt like investigating)
belly onto belly
one cannot get any closer than that
here you have three – if i am not mistaken (a little bit confused i have to confess i am)
naturally entangled or forced upon each other
perhaps central position is too much?