C1111233131211111211113313331333133313331333132213331333133313231333132331221   >>    C111123313121111121111331333133313331333133313221333133313331323133313233122   <<    C1111233131211111211113313331333133313331333132213331333133313231333132331223   >>      C1111233131211111211113313331333133313331333132213331333133313231333132331222   >>