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                Indian Railways Seats Availablity and Reservation
                Following are various types of seats which can be reserved in Indian Railways trains.
             2S - Second SittingThese seats are non-air conditioned. Generally day running trains have this class of reservation. SL - Sleeper Class
                This class is the most popular in Indian Railays. Most of the express train have SL class. This is non-air conditioned class.
                 From 9pm to 6am you can sleep on the berth. 
                 During the day lower berths are used for sitting.
             CC - Chair Car
                3+2 arragement. AC Coach.
             EC - Executive chair carFirst AC Chair car or Executive Chair car . 2+2 arrangement, more spacious designed especially for business class EA - Anubhuthi chair carThe Anubhuti coaches are attached in Shatabdi trains as additional executive class and have ergonomically designed seats. 3A - AC three tier3 beds - Upper , Middle and Lower Beds. AC coach. 2A - AC two tier2 beds - Upper and Lower beds. AC coach. These seats have higher head room as compared to 3AC seats. 1A - AC first classMost expensive AC seats, lockable cabin of 2 beds and 4 beds configuration are available for booking. Seat numbers are only alloted after charting. UR/GEN	- Unreserved/General 
                    
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