D12112221323331322331323132211233132313132332313232233132322123231   >>    D1211222132333132233132313221123313231313233231323223313232212323   <<    D12112221323331322331323132211233132313132332313232233132322123233   >>      D12112221323331322331323132211233132313132332313232233132322123232   >>