C111123313331323113313331333133313231323133312111113231323133313221232311   >>    C11112331333132311331333133313331323132313331211111323132313331322123231   <<    C111123313331323113313331333133313231323133312111113231323133313221232313   >>      C111123313331323113313331333133313231323133312111113231323133313221232312   >>