C1111233131211111211113313331333133313232313331333133313321133132322223331   >>    C111123313121111121111331333133313331323231333133313331332113313232222333   <<    C1111233131211111211113313331333133313232313331333133313321133132322223333   >>      C1111233131211111211113313331333133313232313331333133313321133132322223332   >>