C1111233131211111211113313331333133313331333133313331333121111331323122111   >>    C111123313121111121111331333133313331333133313331333133312111133132312211   <<    C1111233131211111211113313331333133313331333133313331333121111331323122113   >>      C1111233131211111211113313331333133313331333133313331333121111331323122112   >>