C1111233131211111211113313331333133313331312331333132213232113121   >>    C111123313121111121111331333133313331333131233133313221323211312   <<    C1111233131211111211113313331333133313331312331333132213232113123   >>      C1111233131211111211113313331333133313331312331333132213232113122   >>