D1212121221323132313232332313232233132333132322121122112323222311   >>    D121212122132313231323233231323223313233313232212112211232322231   <<    D1212121221323132313232332313232233132333132322121122112323222313   >>      D1212121221323132313232332313232233132333132322121122112323222312   >>