C111113331333132322331333133313331333132313121111112211232313121   >>    C11111333133313232233133313331333133313231312111111221123231312   <<    C111113331333132322331333133313331333132313121111112211232313123   >>      C111113331333132322331333133313331333132313121111112211232313122   >>