C111123313331323113313331333133313331323132333112323133313121333122311   >>    C11112331333132311331333133313331333132313233311232313331312133312231   <<    C111123313331323113313331333133313331323132333112323133313121333122313   >>      C111123313331323113313331333133313331323132333112323133313121333122312   >>