C111123313331323113313331333132313331311331312111113231323223312331   >>    C11112331333132311331333133313231333131133131211111323132322331233   <<    C111123313331323113313331333132313331311331312111113231323223312333   >>      C111123313331323113313331333132313331311331312111113231323223312332   >>