C1111233131211111211113313331333133313331333133313331333133313233113313231111   >>    C111123313121111121111331333133313331333133313331333133313331323311331323111   <<    C1111233131211111211113313331333133313331333133313331333133313233113313231113   >>      C1111233131211111211113313331333133313331333133313331333133313233113313231112   >>