C111123313331323113313331333133313331122112312111113331311331323233111   >>    C11112331333132311331333133313331333112211231211111333131133132323311   <<    C111123313331323113313331333133313331122112312111113331311331323233113   >>      C111123313331323113313331333133313331122112312111113331311331323233112   >>