Para teacher leave

I am quoting below a portion of the leave rules in respect of para teachers issued by the Government of West Bengal, School Education Department Primary Branch
Bikash Bhavan, Salt Lake,
Kolkata – 700 091
vide
No. 134-SE(Pry)/55/Ped/PBSSM, dated 26/02/2009

Casual Leave & Medical Leave:
All Para teachers may enjoy 12 days casual leave for urgent necessity and 7 days leave on medical ground.
If the span of Service of the incumbent is less than one year such leave shall be proportioned accordingly and it will be sanctioned by the Head of the Institutions.
The medical leave shall not be accumulated for the next year. It will lapse as soon as the contractis over.

Thanks for the reply admin. Let me elaborate the discussion.
As we know Casual leave which is not recognised as leave, shall not be combined with any other kind of leave admissible under these rules.
Casual leave can be availed for the maximum period of 6 consecutive days unless it has some special ground.
In view of the above, As casual leave cant be combined with other leave, M.C. rightly deducted the pay of four days .
But in case of special circumstances, (if the incumbent had the ground) was it not possible to treat the entire period as casual leave? Is it not applicable for the para teachers?
I think the loss of pay could be avoided if the incumbent had some special ground and sufficient casual leave in his/her credit. Lets see whats our friends say.