C1111233131211111211113313331333133313331312331333131133132231323231   >>    C111123313121111121111331333133313331333131233133313113313223132323   <<    C1111233131211111211113313331333133313331312331333131133132231323233   >>      C1111233131211111211113313331333133313331312331333131133132231323232   >>