input ---- Pigmentation concerns can be broken into hypopigmentation light patches and hyperpigmentation dark patches
output ---- Pigmentation concerns can be broken into hypopigmentation (light patches) and hyperpigmentation (dark patches).
Add punctuation: As far as the mere enunciation of the principle of natural selection is concerned it is quite immaterial whether or not Professor Owen preceded me for both of us as shown in this historical sketch were long ago preceded by Dr Wells and Mr Matthews
A: As far as the mere enunciation of the principle of natural selection is concerned, it is quite immaterial whether or not Professor Owen preceded me, for both of us, as shown in this historical sketch, were long ago preceded by Dr. Wells and Mr. Matthews.
QUESTION: Fix punctuation: A simple carbohydrate sugar that circulates in the blood glucose is a major source of energy for the body of which normal levels range between 75120mg
ANS: A simple carbohydrate sugar that circulates in the blood, glucose is a major source of energy for the body, of which normal levels range between 75-120mg.
QUES: He sees the challenge in starting a band with so diverse musicians but he has been happy to be part of the process My intuition told me that this band would amount to something since we all got along so well he says and goes on

correct the punctuation.

CORRECTED: He sees the challenge in starting a band with so diverse musicians, but he has been happy to be part of the process. "My intuition told me that this band would amount to something, since we all got along so well," he says and goes on:
Question: projection stretch and focal distortion
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Answer: projection stretch and focal distortion.
input: In this comparison we ignore punctuation accents capitalization double letters and differences caused by interchange of ijy uv csz ctt ultut uldud cqq and lxx
fixed:
In this comparison we ignore punctuation, accents, capitalization, double letters and differences caused by interchange of i/j/y, u/v, c/s/z, ct/t, ult/ut, uld/ud, cq/q and lx/x.