In the data encryption and data compression is often the need for special strings to be encoded. A given alphabet letters of the alphabet by 26 Composition A = {a, b, ..., z}. The resulting string in ascending alphabet letters refer to the same string that appears in the order left to right order with the letters appear in the alphabet, and each character appears at most a times. For example, a, b, ab, bc, xyz ascending like strings are strings.

1_2.dsp
1_2.dsw
1_2.ncb
1_2.opt
1_2.plg
1_2.cpp

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