# Addition ain't simple

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#
#   Jack is awesome. His friends call him little Einstein. To test him, his friends gave him a string.
#   They told him to add the string with its reverse string and follow these rules:
#
#       Every ith character of string will be added to every ith character of reverse string.
#       Both string will contain only lower case alphabets(a-z).
#       Eg:- a+a=b,a+c=d,z+a=a (Refer to sample test cases for more details)
#
#   Input:
#   First line contains a value N denoting number of test cases. Next N lines contains string str.
#
#   Output:
#   For every string str output the string that Jack's friends wants from him.
#
#   Constraints
#   1 <= N <= 10
#   1 <= str <= 10^5
#
#   SAMPLE INPUT
#   4
#   hello
#   codeapocalypse
#   programming
#   world
#
#   SAMPLE OUTPUT
#   wqxqw
#   hhtdmqrrqmdthh
#   wfxtebetxfw
#   aajaa
#
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