C1231321123223331211111131211113313331333132313231132332213132323111   >>    C123132112322333121111113121111331333133313231323113233221313232311   <<    C1231321123223331211111131211113313331333132313231132332213132323113   >>      C1231321123223331211111131211113313331333132313231132332213132323112   >>