C1111233131211111211113313331333133313221211113313331333133313231121131213311   >>    C111123313121111121111331333133313331322121111331333133313331323112113121331   <<    C1111233131211111211113313331333133313221211113313331333133313231121131213313   >>      C1111233131211111211113313331333133313221211113313331333133313231121131213312   >>