C1111233131211111211113313331333133313232321333133313121111331111   >>    C111123313121111121111331333133313331323232133313331312111133111   <<    C1111233131211111211113313331333133313232321333133313121111331113   >>      C1111233131211111211113313331333133313232321333133313121111331112   >>