D1212121221323132313232332313232233131133131323223313132313232111   >>    D121212122132313231323233231323223313113313132322331313231323211   <<    D1212121221323132313232332313232233131133131323223313132313232113   >>      D1212121221323132313232332313232233131133131323223313132313232112   >>