C1111233131211111211113313331333133313311211111333132313331323232311   >>    C111123313121111121111331333133313331331121111133313231333132323231   <<    C1111233131211111211113313331333133313311211111333132313331323232313   >>      C1111233131211111211113313331333133313311211111333132313331323232312   >>