C11111211113313112113313331333133313221333133313113313331322331333132222321   >>    C1111121111331311211331333133313331322133313331311331333132233133313222232   <<    C11111211113313112113313331333133313221333133313113313331322331333132222323   >>      C11111211113313112113313331333133313221333133313113313331322331333132222322   >>