HMM and CRF Package

[subhabangalore at gmail.com]

Dear Group,

I was looking for the following solutions.

(i) a Python Hidden Markov Model(HMM) library.
(ii)a Python Conditional Random Field(CRF) library.
(iii) I am using Python 3.2.1 on Windows 7(64 bit) and also like to get a NLTK version.
(iv) I may use unicode character as input.

If any one may kindly help me out. 

Best Regards,
Subhabrata Banerjee.
Gurgaon.
India.