Fold the slipper double and sew tog edge to edge mid back

Can you repeat this sentence, but add in punctuation?
Fold the slipper double and sew tog edge to edge mid back.
Restore deleted excel files in simple steps from Windows Xp

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Restore deleted excel files in simple steps from Windows Xp:
c the assumption that the gravitational mass is Lorentz invariant

Can you repeat this sentence, but add in punctuation?
c) the assumption that the gravitational mass is Lorentz invariant.