C1111233131211111211113313331323133313231333133313221121133113121   >>    C111123313121111121111331333132313331323133313331322112113311312   <<    C1111233131211111211113313331323133313231333133313221121133113123   >>      C1111233131211111211113313331323133313231333133313221121133113122   >>