C1111233131211111211113313331333133313331322322331312111133131112313231   >>    C111123313121111121111331333133313331333132232233131211113313111231323   <<    C1111233131211111211113313331333133313331322322331312111133131112313233   >>      C1111233131211111211113313331333133313331322322331312111133131112313232   >>