D212213231311233131122112313331323223313233121111121111133313231323223311   >>    D21221323131123313112211231333132322331323312111112111113331323132322331   <<    D212213231311233131122112313331323223313233121111121111133313231323223313   >>      D212213231311233131122112313331323223313233121111121111133313231323223312   >>