C11112331312111112111133133313231333132322121111133313221323331   >>    C1111233131211111211113313331323133313232212111113331322132333   <<    C11112331312111112111133133313231333132322121111133313221323333   >>      C11112331312111112111133133313231333132322121111133313221323332   >>