D33211132313231333132233131113231333131323223313231323311212221   >>    D3321113231323133313223313111323133313132322331323132331121222   <<    D33211132313231333132233131113231333131323223313231323311212223   >>      D33211132313231333132233131113231333131323223313231323311212222   >>