D1122211211331313331323221123313233313112211232233131333132333131121   >>    D112221121133131333132322112331323331311221123223313133313233313112   <<    D1122211211331313331323221123313233313112211232233131333132333131123   >>      D1122211211331313331323221123313233313112211232233131333132333131122   >>