C1111233131211111211113313331333133313232321333133313331333131211111323131211   >>    C111123313121111121111331333133313331323232133313331333133313121111132313121   <<    C1111233131211111211113313331333133313232321333133313331333131211111323131213   >>      C1111233131211111211113313331333133313232321333133313331333131211111323131212   >>