C1111233131211111211113313331333133313231323331333133313222313331312323231   >>    C111123313121111121111331333133313331323132333133313331322231333131232323   <<    C1111233131211111211113313331333133313231323331333133313222313331312323233   >>      C1111233131211111211113313331333133313231323331333133313222313331312323232   >>