C11112331312111112111133132313331333133313233313232112323233231   >>    C1111233131211111211113313231333133313331323331323211232323323   <<    C11112331312111112111133132313331333133313233313232112323233233   >>      C11112331312111112111133132313331333133313233313232112323233232   >>