C11112331312111112111133133313231333132322121111133313231333223111   >>    C1111233131211111211113313331323133313232212111113331323133322311   <<    C11112331312111112111133133313231333132322121111133313231333223113   >>      C11112331312111112111133133313231333132322121111133313231333223112   >>