C111123313331323113313331333133313331122112312111133132321132311   >>    C11112331333132311331333133313331333112211231211113313232113231   <<    C111123313331323113313331333133313331122112312111133132321132313   >>      C111123313331323113313331333133313331122112312111133132321132312   >>