C111123313331323113313331333133313331122112312111113331311331323132322131   >>    C11112331333132311331333133313331333112211231211111333131133132313232213   <<    C111123313331323113313331333133313331122112312111113331311331323132322133   >>      C111123313331323113313331333133313331122112312111113331311331323132322132   >>