C111123313331323113313331323133313331333132331211113313331323132312311   >>    C11112331333132311331333132313331333133313233121111331333132313231231   <<    C111123313331323113313331323133313331333132331211113313331323132312313   >>      C111123313331323113313331323133313331333132331211113313331323132312312   >>