C11111333133313232233133313331333133313221333133313231323211311111   >>    C1111133313331323223313331333133313331322133313331323132321131111   <<    C11111333133313232233133313331333133313221333133313231323211311113   >>      C11111333133313232233133313331333133313221333133313231323211311112   >>