Const initial vectors in MDS

I need to use MDS, but some initial vectors in MDS must be const when others are calculating.

Example:

vector1 - const
vector2 - const
vector3 - const
...
vector10 - mutable
vector11 - mutable
vector12 - mutable
...

So, only vectors 10,11,12... are changeable by a distance matrix.

Do we have a tool for that in python?

from Const initial vectors in MDS