D1313331322132333132333132312312323331323223313113313231323211221   >>    D131333132213233313233313231231232333132322331311331323132321122   <<    D1313331322132333132333132312312323331323223313113313231323211223   >>      D1313331322132333132333132312312323331323223313113313231323211222   >>