D131333132213233313233313231231232333132322331311331323123232221   >>    D13133313221323331323331323123123233313232233131133132312323222   <<    D131333132213233313233313231231232333132322331311331323123232223   >>      D131333132213233313233313231231232333132322331311331323123232222   >>