C11111211113313112113313331333133313331333132212111133132312311331   >>    C1111121111331311211331333133313331333133313221211113313231231133   <<    C11111211113313112113313331333133313331333132212111133132312311333   >>      C11111211113313112113313331333133313331333132212111133132312311332   >>