C111123313331323113313331333133313331122112312111111331323211232311   >>    C11112331333132311331333133313331333112211231211111133132321123231   <<    C111123313331323113313331333133313331122112312111111331323211232313   >>      C111123313331323113313331333133313331122112312111111331323211232312   >>