C1111233131211111211113313331333133313231323331333133313233313231231   >>    C111123313121111121111331333133313331323132333133313331323331323123   <<    C1111233131211111211113313331333133313231323331333133313233313231233   >>      C1111233131211111211113313331333133313231323331333133313233313231232   >>