C1111233131211111211113313331333133313331333133313331333133313233113313222331   >>    C111123313121111121111331333133313331333133313331333133313331323311331322233   <<    C1111233131211111211113313331333133313331333133313331333133313233113313222333   >>      C1111233131211111211113313331333133313331333133313331333133313233113313222332   >>