C111221232313231313231313231323223313233313331323133313232222331   >>    C11122123231323131323131323132322331323331333132313331323222233   <<    C111221232313231313231313231323223313233313331323133313232222333   >>      C111221232313231313231313231323223313233313331323133313232222332   >>