C111113331333132322331333133313331323133313233213133313231333132213233311   >>    C11111333133313232233133313331333132313331323321313331323133313221323331   <<    C111113331333132322331333133313331323133313233213133313231333132213233313   >>      C111113331333132322331333133313331323133313233213133313231333132213233312   >>