D13231123313133313132233132312132313233313233313223313131323231   >>    D1323112331313331313223313231213231323331323331322331313132323   <<    D13231123313133313132233132312132313233313233313223313131323233   >>      D13231123313133313132233132312132313233313233313223313131323232   >>