C132233133112121111331333133313231333133313231133131133131133132333112222221   >>    C13223313311212111133133313331323133313331323113313113313113313233311222222   <<    C132233133112121111331333133313231333133313231133131133131133132333112222223   >>      C132233133112121111331333133313231333133313231133131133131133132333112222222   >>