D12121212213231323132323323132322331323331323221211221123231323231   >>    D1212121221323132313232332313232233132333132322121122112323132323   <<    D12121212213231323132323323132322331323331323221211221123231323233   >>      D12121212213231323132323323132322331323331323221211221123231323232   >>