C1111233133313231133133313231333133313113313232321333131231232311   >>    C111123313331323113313331323133313331311331323232133313123123231   <<    C1111233133313231133133313231333133313113313232321333131231232313   >>      C1111233133313231133133313231333133313113313232321333131231232312   >>