C132233133112121111331333133313231333133313231133132333132222221   >>    C13223313311212111133133313331323133313331323113313233313222222   <<    C132233133112121111331333133313231333133313231133132333132222223   >>      C132233133112121111331333133313231333133313231133132333132222222   >>