C1111233131211111211113313331333133313232313331333133313321133132331231   >>    C111123313121111121111331333133313331323231333133313331332113313233123   <<    C1111233131211111211113313331333133313232313331333133313321133132331233   >>      C1111233131211111211113313331333133313232313331333133313321133132331232   >>