C1111233133313231133133313331333132313231333121111331313331323222211   >>    C111123313331323113313331333133313231323133312111133131333132322221   <<    C1111233133313231133133313331333132313231333121111331313331323222213   >>      C1111233133313231133133313331333132313231333121111331313331323222212   >>