What are the isomers of C3H6O?

I count 11 isomers of ##”C”_3″H”_6″O”##.
They are:
Prop-2-en-1-ol

(from commons.wikimedia.org)
Methoxyethene
Propanone

(from www.meritnation.com)
And its tautomer,
Prop-1-en-2-ol
Propanal

(from commons.wikimedia.org)
And its two tautomeric isomers
(##Z##)-Prop-1-en-1-ol
and
(##E##)-Prop-1-en-1-ol
Then we have
Cyclopropanol
Oxetane
(##R##)-Methyloxirane
(##S##)-Methyloxirane
And that makes 11 isomers!