D1212121221323132313232332313232233132333132312111133132333132313332211   >>    D121212122132313231323233231323223313233313231211113313233313231333221   <<    D1212121221323132313232332313232233132333132312111133132333132313332213   >>      D1212121221323132313232332313232233132333132312111133132333132313332212   >>