D1122112312233231312323132322331311331323132311331323223313231333111   >>    D112211231223323131232313232233131133132313231133132322331323133311   <<    D1122112312233231312323132322331311331323132311331323223313231333113   >>      D1122112312233231312323132322331311331323132311331323223313231333112   >>