C1111233131211111211113313331333133313331312211113313331323132312311   >>    C111123313121111121111331333133313331333131221111331333132313231231   <<    C1111233131211111211113313331333133313331312211113313331323132312313   >>      C1111233131211111211113313331333133313331312211113313331323132312312   >>