C1111133313331323223313331333133313331333232111211113313112113313233332311   >>    C111113331333132322331333133313331333133323211121111331311211331323333231   <<    C1111133313331323223313331333133313331333232111211113313112113313233332313   >>      C1111133313331323223313331333133313331333232111211113313112113313233332312   >>