C111113331333132322331333133313331323133313233213133313331211111232323311   >>    C11111333133313232233133313331333132313331323321313331333121111123232331   <<    C111113331333132322331333133313331323133313233213133313331211111232323313   >>      C111113331333132322331333133313331323133313233213133313331211111232323312   >>