C11111211113313112113313331333133313331333132313331333133112111133131133232321   >>    C1111121111331311211331333133313331333133313231333133313311211113313113323232   <<    C11111211113313112113313331333133313331333132313331333133112111133131133232323   >>      C11111211113313112113313331333133313331333132313331333133112111133131133232322   >>