C11111211113313112113313331333133313331333132313331333133112111133131133221311   >>    C1111121111331311211331333133313331333133313231333133313311211113313113322131   <<    C11111211113313112113313331333133313331333132313331333133112111133131133221313   >>      C11111211113313112113313331333133313331333132313331333133112111133131133221312   >>