C111123313331323113313331333133313331323132333133313331312111113132311   >>    C11112331333132311331333133313331333132313233313331333131211111313231   <<    C111123313331323113313331333133313331323132333133313331312111113132313   >>      C111123313331323113313331333133313331323132333133313331312111113132312   >>