D331313132213123231323132333132313231323221333132322331323221321   >>    D33131313221312323132313233313231323132322133313232233132322132   <<    D331313132213123231323132333132313231323221333132322331323221323   >>      D331313132213123231323132333132313231323221333132322331323221322   >>