C11111211113313112113313331333133313331333132212111133133323311331   >>    C1111121111331311211331333133313331333133313221211113313332331133   <<    C11111211113313112113313331333133313331333132212111133133323311333   >>      C11111211113313112113313331333133313331333132212111133133323311332   >>