C1111233131211111211113313331333133313331312331333133112313331322311   >>    C111123313121111121111331333133313331333131233133313311231333132231   <<    C1111233131211111211113313331333133313331312331333133112313331322313   >>      C1111233131211111211113313331333133313331312331333133112313331322312   >>