C1111233131211111211113313331333133313232321331133132313331322121   >>    C111123313121111121111331333133313331323232133113313231333132212   <<    C1111233131211111211113313331333133313232321331133132313331322123   >>      C1111233131211111211113313331333133313232321331133132313331322122   >>