Material in the right column can be deleted when pattern emerges. It is a place to keep rough notes about features found in the letters so that patterns may be discerned. Such patterns as are "confirmed", or at least seem likely, will be expounded on in this space.
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1. Blue numbers in circles are found in four letters so far, letters tagged with 787 to 790; numbers are 2, 3, 4 and 5 respectively. 787, 788 and 790 each have also a red tick mark in the upper left area above the salutation, while 789 is lacking such.
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