C1111233131211111211113313331333133313331333132213331333133313231121131231   >>    C111123313121111121111331333133313331333133313221333133313331323112113123   <<    C1111233131211111211113313331333133313331333132213331333133313231121131233   >>      C1111233131211111211113313331333133313331333132213331333133313231121131232   >>