C1111133313331323223313331333133313331333123313231333132231133133313121   >>    C111113331333132322331333133313331333133312331323133313223113313331312   <<    C1111133313331323223313331333133313331333123313231333132231133133313123   >>      C1111133313331323223313331333133313331333123313231333132231133133313122   >>