Anonymous ID: aaf1ea Feb. 27, 2018, 11:58 p.m. No.517189 🗄️.is 🔗kun >>7490 >>517167 When you orient the map
Anonymous ID: aaf1ea Feb. 28, 2018, 12:02 a.m. No.517203 🗄️.is 🔗kun >>517184 The article on modular arithmetic referenced in the graphic looks to be sauce for the key.