D1122112312233231312323132322331323223313331123123231323132333221   >>    D112211231223323131232313232233132322331333112312323132313233322   <<    D1122112312233231312323132322331323223313331123123231323132333223   >>      D1122112312233231312323132322331323223313331123123231323132333222   >>