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now let us see this example construct push down Auto Meter PDA for the language L is equal to a power n b power n such that n is greater than or equal to 1 we know that PDA is represented by seven tuples Q comma Sigma comma Tau comma Delta gamma Q naught gamma yeah so first let us write the language L is equal to here n starts from 1 if n is equal to 1 then a power 1 B power one so one occurrence of a means single B next n becomes 2 so a power 2 B power 2 so a power 2 means 2 is B power 2 means two wheels next n becomes 3 so a power 3 B power three so a power 3 means three is B power three means three will be so likewise we can have n number of strings so first let us see the procedure totally here we have three steps are there Step One initially push all the Aamp;#39;s onto the stack so if we read a then we have to push that a on to the stack Step 2 whenever B occurs then change the state and pop a from the stack so if we read B then we have to then we have to change the State then w