C111113331333132322331333133313331333132313121111331311111111123121   >>    C11111333133313232233133313331333133313231312111133131111111112312   <<    C111113331333132322331333133313331333132313121111331311111111123123   >>      C111113331333132322331333133313331333132313121111331311111111123122   >>